MCMINNVILLE, Ore. -- A McMinnville man nearly killed his girlfriend when he set their home on fire Wednesday, police said.

Court documents said Larry Barnard was drunk, bipolar and off his medications when he poured gasoline inside their Marie Drive home just before 5:30 p.m.

Slideshow: View Photos From The Incident

The ensuing fire trapped 38-year-old Krista Wiegel in the home and she suffered burns on 90 percent of her body, witnesses said.

Witnesses said Wiegel had terrible burns on her face and arms and most of her hair had burned off.

Court records suggest she was trying to get away from her boyfriend when he set everything on fire.

Neighbor and witness Stephanie Varao tried to help pull Wiegel from the fire. Witnesses said Barnard also doused Wiegel with gas and set her on fire too.

"Oh man it was horrible. Her whole face was all burned, her clothes were burned. Her skin was just all black. It was just like peeling off. Her hair was all singed up," Varao said. "The friend said (Barnard) was just throwing gas everywhere and flicking matches."

Barnard had sent aggressive text messages to Wiegel throughout the day while she was at work, according to court records.

After work she brought a friend to her McMinnville home to help collect clothing for herself and three kids, investigators said.

After arriving home, Barnard made suicidal statements and then poured gas on himself and the mobile home before lighting everything on fire, police said.

When police arrived, Barnard was outside the house naked while Wiegel was still inside screaming for help, neighbors said.

"I just think that's disgusting. Like, wow, what were you thinking?" Varao said.

Investigators said Barnard climbed out a bedroom window to escape, leaving his girlfriend inside to burn behind locked doors.

Barnard is bipolar, was drunk and off his medication at the time of the fire, investigators said.

Two officers broke through the door of the home and helped Wiegel out, police said. A LifeFlight helicopter rushed her to Legacy Emanuel Hospital, where she was in critical condition Thursday.

Court documents said Barnard had been making suicidal statements before he poured gas on himself and the home.

Barnard suffered minor injuries. After he was released from a hospital, police arrested him on charges of arson and assault.

He made his first court appearance Thursday afternoon.

View News Report: Man Arrested After Fire Burns Girlfriend