By Brian Ping

PALM SPRINGS (CBS) — A security guard at a Palm Springs-area middle school was behind bars Wednesday after he was found guilty of sexually abusing four female students.

KNX 1070’s Brian Ping reports Marvin Cash first made inappropriate contact with several girls while handling tardy sweeps at Desert Springs Middle School in 2008.

One of the victims was taken into the walk-in freezer of the school store, where the 47-year-old Cash exposed and touched himself in front of her, then grabbed her and forced her to touch him.

He was convicted of committing a lewd act on a child under the age of 14 using force, sexual battery and two counts of annoying or molesting a minor, according to court reports.

Other girls have since come forward with allegations that Cash had made sexual comments toward them.

Cash’s attorney denied the physical contact in the freezer ever happened, and said that Cash was guilty of merely being the “cool” security guy in school and making comments that were potentially inappropriate, but nothing amounting to a felony.

The defendant’s inappropriate behavior had allegedly gone back to 1997, when he fondled his girlfriend’s 9-year-old daughter.