Actresses from all over the world, including some from San Diego like Denise Richards, have had good days and bad days in Hollywood. According to the widower of Brittany Murphy, one legendary Hollywood company played a role in his wife’s death.

Movie executives at Warner Brothers are firing back at “false, reprehensible, and defamatory” accusations leveled at them by Simon Monjack, Murphy’s widower.

Monjack has indicated he’s planning to file a wrongful-death suit against the movie studio execs for allegedly firing the actress from “Happy Feet 2” two weeks prior to her Dec. 20, 2009 death.

According to Monjack, his late wife suffered a heart attack as a result of stress related to being let go from the project.

Monjack recently commented to TheDailyBeast.com, “They killed her… She was devastated. All she wanted to do was to make movies. She was waiting for the role that would revive her career, waiting for the call from Penny Marshall or Gary Fleder, people she had worked with before, that they might remember how talented an actress she was and call with a new magical role.”

Brittany Murphy was devastated when her career ground to a halt after she decided to sacrifice acting roles to look after her sick mother. The Clueless star passed away on the 20th of December (09) after suffering a cardiac arrest at her Hollywood Hills home. Her widower Simon Monjack admits the actress was heartbroken about the ongoing lull in her career, after her character was written out of Sylvester Stallone’s upcoming blockbuster The Expendables. The film would have marked Murphy’s return to the big screen after years off to nurse her cancer-stricken mum.

Monjack tells U.S. talk show host Larry King, “(The public outpouring of support after her death) was unbelievable. And I think Brittany would have been more surprised than anybody. You know, her career, by her own admission, in the last few years – five or six – had taken a downturn.”

Murphy’s mum adds, “There was (a downturn) for probably the last maybe five years. I got really sick. You know, I had cancer twice. And she had initially taken off to be with me in the hospital and slept there every day for the four weeks, five weeks I was there and was just with me always and, you know, controlling all the doctors and making sure all the right things were done. I just never dreamed that (she would die first). You know, I always thought it would be me, not her.”

Monjack admits Murphy believed she was being ostracised from Hollywood, adding: “It’s funny, Brittany and I spoke about this often. And she had her theories – a rumour – the theory was that she had upset the wrong people at the wrong time. (But) she was the kindest, sweetest person. I think it was more that she was too kind, too sweet, too – she was this bubble that existed in a plane beyond ours.”

Brittany Murphy’s cause of death has been determined — an accidental death caused by “community acquired pneumonia,” iron deficiency anemia, and multiple drug intoxication.

The L.A. County Coroner concludes on the subject of “How injury occurred” — “Drug intake.”

Brittany Murphy’s sudden death at age 32 is under investigation by the Los Angeles County Coroner’s Office, which will conduct an autopsy “as soon as possible,” an official tells PEOPLE.

No cause of death has yet been determined, but according to coroner’s Capt. John Kades, “Foul play is not suspected at this time because there were no outward signs of trauma or other injuries.”

Murphy was “found unresponsive” in her home in the hills above West Hollywood on Sunday morning, Kades said. Paramedics transported her to Cedars-Sinai Medical Center, where she was pronounced dead at 10:04 a.m.

“We don’t have an autopsy scheduled yet, but we will do it as soon as possible,” Kades said. “Given all the worldwide attention, if we can get it done [Monday], we will.”

A toxicology test looking for the presence of alcohol and drugs will also be conducted, but the results will not be available for weeks.

Los Angeles police detectives also arrived at Murphy’s house in what a police spokesman called a “routine” death investigation.

One of Murphy’s neighbors said that paramedics were inside her house for nearly an hour before she was taken to an ambulance on a stretcher.

“One paramedic was still working on her,” said the female neighbor. “First, I couldn’t even tell that it was Brittany that was on the stretcher. I looked like an older woman. Brittany was completely white and her face was covered with a mask. You could tell that something horrible had happened.”

Brittany Murphy is dead of a heart attack at 32.

She went into full cardiac arrest early Sunday  and could not be revived, the Website TMZ reported.

The Los Angeles City Fire Department got a call from the home of Murphy’s husband Simon Monjack about 8 a.m., fire officials told TMZ.

She was taken to Cedars-Sinai Medical Center, where she was pronounced dead on arrival

Murphy starred in “8 Mile,” and “Don’t Say a Word.”

The starlet became a household name among teens in 1995 as the sidekick in “Clueless,” who went from awkward wall flower to snotty hottie.

A few years ago, she released the single “Faster Kill Pussycat,” which became a dance club hit.

Her last big movie was “Sin City” in 2005.

It had just been reported that cops received a 911 call at around 2:30 this morning in LA. Neighbors of Brittany Murphy called to complain about the actress, who was making a scene about alleged gun shots fired outside her Hollywood home.

LAPD says when they arrived to the house, they saw the actress on her balcony, yelling about the alleged gun fire.

It has also been reported that no weapon, casings or body was found and after an investigation, the noise was discovered to be coming from a generator, which had been acting up due to the weather last night.

Brittany Murphy has hit back at rumors she was fired from her new movie, currently filming in Puerto Rico, and replaced by Twilight’s Rachel Lefevre.

Reports out of Puerto Rico suggested that Clueless star Brittany, 32, was thrown off the film set for being difficult, while there was talk that her British husband, Simon Monjack — who was reportedly hospitalized on Saturday — fought with locals.

However, her rep says these stories are not true.

“The allegations currently circulating on the internet about Brittany Murphy and her husband Simon Monjack read like a fictional plot from one of the 50 plus movies Ms. Murphy has successfully completed without incident,” says the rep.

“She was not nor has she ever been fired from any job big or small. Mr. Monjack did not engage in any alleged scuffles. Though do to creative differences Ms. Murphy and the production mutually parted ways.

“As far as wanting to allegedly “sabotage this project”, to the contrary Ms. Murphy wished this production nothing but the best. Puerto Rico gave Ms. Murphy a brief insight into its wonderful culture and warm people. Ms. Murphy would like to take this opportunity to thank the public for their continued support.”

Brittany Murphy has been cast in Something Wicked, a psychological thriller about a guy whose girlfriend’s parents are killed.

Brittany Murphy’s career has pretty much gone kaput in recent years, causing her to commit actress suicide by doing a Lifetime movie.

She and Jason Lewis (yes that Jason Lewis) star in the Lifetime original Tribute next month.

Brittany stars as Cilla McGowan, a former child star who restores old houses as a hobby. She decided to buy her grandmother’s old farmhouse in Virginia to rescue it from devastation.

That’s where she meets Ford Sawyer, played by Lewis, the hot neighbor who is there to protect Cilla when she starts having nightmares about her grandmother and other family secrets.