TAMPA — Polk County deputies arrested a Tampa man Wednesday they accused of killing his girlfriend's 7-week-old daughter.
Eric Thomas Trinchet, 28, faces a charge of aggravated manslaughter of a child.
He took Tianna Irizarry of Tampa and her baby daughter to visit a family member in Lakeland on April 27, according to an arrest affidavit. Trinchet told deputies that, the next day, they got high on prescription drugs and he and Irizarry got into a violent confrontation.
During the fight, 7-week-old Isabella began to cry, prompting Trinchet to check on her. He told deputies he shook the baby, then put her back in the crib.
Polk deputies began investigating Isabella's case at Lakeland Regional Medical Center on May 1. She was there suffering from a brain injury, bruises of her left foot and ears and puncture wounds on her left thigh.
The baby was later transferred to Tampa General Hospital, where she died Monday.
Trinchet was not Isabella's biological father but had been dating Irizarry for nine months, the affidavit said. He told deputies he immediately recognized what he had done to the baby, and slept for two days after the incident. The Tampa man turned himself in to the Polk County Sheriff's Office at 3 a.m. Wednesday, saying he could no longer handle the guilt, the affidavit said.