Jason Sullivan, the actor's 41-year-old neighbor, was arrested on suspicion of trespassing Sunday night after he was subdued by a stun gun-wielding security guard on Cruise's property, police said.
The film star was not at home at the time of the incident.
"Upon arrival, officers contacted a lone male suspect who was attempting to leave the location. The suspect had been previously detained by a security officer, who was on duty at the residence and had observed the suspect climbing a fence to gain access to the property," the police department said in a statement issued to the Los Angeles Times Sunday night.
The man was arrested and taken to a hospital where he was examined after being hit with the stun gun, the newspaper said.