OCOEE, Fla. - Channel 9 has learned more details about an Ocoee woman found dead in her home on Monday.
Homicide investigators said they arrested three people in 52-year-old Rosemary Pate's death at her Lancer Circle home, including Pate's son, Everett Pate.
Investigators said Everett Pate is charged with first-degree murder and tampering with evidence.
Haylie Ellis, 19, and Shakir Ricketts, 20, are charged with accessory after the fact and tampering with physical evidence. Detectives said the pair used bleach to clean up the scene.
Ellis, reportedly the girlfriend of Everett Pate, walked out of jail after posting bail overnight.
Investigators said Rosemary Pate's son stabbed her multiple times. Ellis told police she saw him standing over his mother with two knives and then grab her around the neck to "finish her off."
Everett Pate's friend, Jalissa Williams, talked to Channel 9.
"I just thought he was mad. (I) Never thought he would do something like this," Williams said.
But Williams said Pate had a temper and she wanted people to know she didn't think her boyfriend, Ricketts, knew anything about the murder.
But police said Ricketts and Ellis helped cover up the crime.
According to investigators, they helped ransack the home, trying to make it look like a robbery. Investigators said they also poured bleach on the victim's body to destroy evidence and then took off with her cars and belongings.
Rosemary Pate's sister told police if it was murder, there was no doubt Everett was responsible. She said he had recently threatened Rosemary with scissors, and his "unruly behavior" was escalating.
"I just, I don't know any explanation why a son would want to kill his mother," said Sgt. Brian Satterlee of the Ocoee Police Department.
Police say they don't really have a motive for the murder, but court documents show Everett Pate may have been upset after his mother locked him and his girlfriend out of the house.
Ricketts and Pate were charged last year in a robbery, detectives said, and Pate had been jailed for failure to appear on drug charges.
Neighbors told Channel 9 they would normally see Pate or her son nearly every day, but hadn't seen either one in the two days before police found Pate's body.
"Unfortunately we do get domestic situations quite often, most homicides we encounter are. A son and mother are very rare. I just, I can't, I don't know any explanation why a son would want to kill his mother," said Satterlee.
Channel 9's Jeff Deal found Pate had a restraining order against her son last October.
In her petition for an injunction against him, Pate said she was afraid that her son might kill her.
Pate wrote, "My son's lifestyle and shady friends makes me fear for my life."
She claimed her son told her, "If I weren't on probation, I would kill you," and she said he even kept her hostage in the home.
Pate's mother also wrote in a report that she had to install a special lock on her bedroom door in order to create a safe room.
"She was very active, very thoughtful, very conscientious, very wonderful woman, and she will be missed," said Rosemary Pate's niece, Tiffany Kelly.
Family members said Pate was a hardworking woman who was a manager at Lockheed Martin for nearly 30 years. They said she mentored children, and recently completed a 70-mile bike ride to help raise money to fight diabetes.
"When hurricane victims were here, she cooked for them. She was that kind of person," said Kelly. "It is absolutely a priority for my family to have peace; to find out what happened."