REDWOOD CITY — A 42-year-old San Mateo County sheriff’s deputy has pleaded not guilty to unlawfully beating three inmates at the jail last year, according to prosecutors.

Blake Lycett entered his plea through an attorney Friday.

The District Attorney’s Office alleges Lycett used excessive force in August 2018 by punching the inmates in the head and body as well as pushing one inmate’s head into an elevator door.

Portions of the alleged misdemeanor offenses were caught on camera, according to prosecutors.

A jury trial has been set for June 24.

If convicted, Lycett could be fined up to $10,000 and ordered to serve one year in jail.

Lycett remains out of custody on his own recognizance.