A suspect in the slayings of five college students has been convicted of beat ing up his grandmother, despite her testimony that her injuries came from a fall.

Edward Lewis Humphrey, 19, was found guilty Wednesday of battery on a person over 65. Under state guidelines, he could get nearly two years in prison at sentencing Nov. 8.Humphrey has been identified by police as a prime suspect in the August serial slayings of five students in Gainesville, including four students at the University of Florida, where he was a freshman.

Humphrey, who is being held on $1 million bail, is not charged in the Gainesville killings. No arrests have been made in that case.

Prosecutors said Humphrey pummeled 79-year-old Elna Hlavaty on Aug. 30. Her face was bruised and one eye was swollen shut.

The arresting officer testified that Hlavaty identified her grandson as her attacker. But Hlavaty testified that she lost her balance and fell on a fireplace while reaching for a light switch.

"I am heartbroken that I have a crippled grandson that is being railroaded in hell until they find the Gainesville murderer," she said.