Robert Burton, 40, of Abbot, center wearing blue, sits with his defense attorneys Hunter Tzovarras, right, and Zachary Brandmeirs, left. Burton is charged with murder in the shooting death of his former girlfriend, Stephanie Ginn Gebo, 37, of Parkman in June 2015. Credit: Nok-Noi Ricker

The man accused of killing his ex-girlfriend before leading police on the longest manhunt in state history left behind hand-written notes that accused his alleged victim of infidelities with dozens of men, police testified on Tuesday.

Papers found in the backpack Robert Burton left at the scene more than two years ago also contained questions about text messages, a dating website and Facebook postings, Maine State Police Detective Micah Perkins said.

Perkins read from the six pages of papers that contained Burton’s handwriting on the second day of the Abbot man’s murder trial at the Penobscot Judicial Center in Bangor.

Burton, 40, has pleaded not guilty to murder in the June 4, 2015, shooting death of Stephanie Ginn Gebo, 37, of Parkman.

The prosecution has portrayed Burton as a jealous, jilted lover, who shot Ginn Gebo in the back after climbing into her bedroom window. The defense has said Burton acted in self defense after Ginn Gebo shot him and that she invited him to her home.

Most of the statements and questions the detective read to the jury were sexually explicit. In his writings, Burton accused Ginn Gebo, who broke up with him on May 30, 2015, of being “a sex-fiend whore.”

The questions he wrote down included:

— “Why didn’t you answer my text messages while you were at work, but then you are posting on Facebook?’

— “Back when I confronted you about being on, you was on it, wasn’t you?”

— “What was the real reason you took our relationship off Facebook?”

— “You’ve been hoping I’d move out for some time. Have you always been loyal to me?”

The backpack was found outside Ginn Gebo’s open bedroom window along with a camouflage jacket, Perkins said. The backpack also contained a roll of duct tape, binoculars, a knife, trash bags, prescription medications with Burton’s name on them and a mug with a liquid in it that smelled of alcohol, among other items, he said.

The body of Ginn Gebo was face down in her bedroom, just inside the door, in a pool of blood, Perkins told the jury.

The detective said he found four 9 mm casings and three bullets in the bedroom and under Ginn Gebo’s body. He also testified that a pillow on the bed appeared to have a bullet hole in it.

Assistant Attorney General Donald Macomber said Monday in his opening statement that Burton used a pillow to muffle the gunshots.

Defense attorney Hunter Tzovarras countered in his opening statement that Ginn Gebo shot Burton through the pillow with the gun she kept under it. The two, then struggled for her gun behind her back, when it went off.

Several of Ginn Gebo’s co-workers testified Monday she was afraid of Burton, but she refused to take them up on offers to hide at their houses instead of with her children in their Parkman home.

“She said that if he came for her, she’d ‘get him first’ and ‘If I come up missing, look for Robert Burton,’” Shelley Edgecomb of Burnham said.

The trial is scheduled to continue Wednesday with testimony about the hunt for Burton and his surrender on Aug. 11, 2015, at the Piscataquis County Jail. The jury is not expected to begin deliberating until next week after Burton takes the stand in his own defense.

If convicted of murder, he faces between 25 years and life in prison.