A city intern in Santa Ana was convicted Thursday of surreptitiously videotaping men in the restroom at City Hall using a cellphone, Orange County prosecutors said.

Miguel Ruiz Fabian, 24, pleaded guilty Thursday to eight counts of misdemeanor disorderly conduct by unlawful viewing and has been sentenced to six months in jail in addition to three years probation.

Fabian, who was a engineering student at Cal Poly Pomona and interning in the city Public Works Department, recorded men using the restroom in Santa Ana City Hall and the City Hall Annex 64 times over 23 days between Dec. 28, 2010, and May 31, 2011.

Prosecutors said Fabian would enter bathroom stalls, put his phone on the floor and record the men in adjacent stalls as they used the restroom.

Last May 31, one victim looked down and told authorities he saw the phone at the foot of his stall. He grabbed the phone, identified Fabian as the owner and called the police.

Authorities said the victims were predominantly city employees . The victims who could be identified have been alerted to the situation by Santa Ana police, but the identities of a number of victims remains unknown, authorities said.

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--Rick Rojas