Authorities are looking for a man sentenced for stalking actress Mila Kunis after he escaped from a mental health facility in Southern California.

Los Angeles County sheriff's Lieutenant Martin Rodriguez told local media that Stuart Lynn Dunn disappeared on Saturday night from the Olive Vista Behavioural Health Center in Pomona.

Rodriguez says deputies and the county's Probation Department are searching for Dunn, who pleaded no contest to stalking the Black Swan and That '70s Show actress in January 2013.

Dunn was sentenced to six months of rehabilitation and five years of probation and ordered to stay away from the actress and her representatives for 10 years.