10/29/2012 10:56 am ET Updated Oct 30, 2012

Benjamin Bishop Confesses To Murder Of Own Mom And Her Boyfriend

A Florida teenager with a history of mental illness and an addiction to bath salts is charged with murdering his mother and her live-in boyfriend, the Tampa Bay Times reports.

Benjamin Bishop, 18, called police to confess immediately after he used a sawed-off shotgun to kill his mother, Imari Shibata, and her boyfriend, Kelley Allen, both 49, early Sunday morning, ABC News reports.

Bishop, who recently returned from a 10-month stint in rehab, became enraged during an argument over his prescription drugs, Pinellas Sheriff Bob Gualtieri said Sunday.

"Apparently, Benjamin became very upset with his mother because he didn't like the medication," Gualtieri told the Tampa Bay Times. "He felt that the medication was killing him. So he decided that he was going to kill his mother and her boyfriend."

According to a police statement:

Bishop advised detectives that on Saturday, Oct. 27, his mother told him to get a job, take his medicine for his mental health issues, and to start paying rent. Bishop said he also had a heated discussion with Allen over the laundry. Saturday night, Bishop said he was angry and retrieved the shotgun after the arguments, loaded the weapon and shot his mother and Allen in their bedroom. He told detectives he then reloaded the shotgun and shot them again.

Bishop, diagnosed with schizophrenia, pawned electronics to purchase the weapon for $279, according to the New York Daily News.

In July 2011, Bishop attempted to strangle his mother, police also said. He was put on probation for that incident.

Bishop is being held without bail in the Pinellas County Jail.

Correction: A previous headline for this story stated that Bishop was on bath salts during the incident in question. This detail has not been confirmed.



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