Published: Oct 27, 2010 10:52 PM EDT
Updated: Oct 27, 2010 7:49 PM EDT

FORT MYERS, Fla. - Richard Elkins decided not to take the stand in his own murder trial. He's accused of raping Obed Flores in 2007 and then beating him to death with a shovel.

Wednesday a jury heard a taped confession where he told deputies he remembers hitting Flores several times with a garden shovel. It all happened in a Bonita Springs shopping center.

A forensic psychiatrist testified Elkins was on several strong prescription drugs and marijuana while he was being questioned. Elkins' lawyers argue he was coerced into admitting he murdered Flores.

The defense team is trying to pin the murder on Elkins' roommate and coworker Christopher Maner who is now spending 8 years behind bars for his role in the crime. He took a plea deal.

Closing arguments begin tomorrow morning. The jury will then begin deliberating.