PITTSBURGH (AP) — A former high school chemistry teacher in suburban Pittsburgh has been sentenced to eight months of house arrest and five years of probation after pleading guilty in an online sex sting.

Nicholas Salvo apologized for his actions Tuesday as he was sentenced. Prosecutors say the 35-year-old Mount Lebanon man sent sexually explicit photos and chat room messages to an undercover agent posing as a 14-year-old girl. He pleaded guilty in May to two counts of unlawful contact with a minor and one count of criminal use of a communication facility.

Salvo must register as a nonviolent sex offender under Megan’s Law for 10 years.

Salvo taught at Mount Lebanon High School since August 1999. He was briefly head coach of the girls’ tennis team before he was suspended last summer.