PORTLAND – A longtime priest accused of sexual abuse has resigned as pastor of a Lyman parish, and allegations against him have been forwarded to the Vatican, church officials said.

The Rev. Thomas Lee, 76, stepped down as pastor of St. Philip Parish on a temporary basis last year pending an investigation of what the Roman Catholic Diocese of Portland said was a report of sexual abuse of a minor about 20 years ago.

A letter written by Bishop Joseph Gerry said the initial investigation has been completed and that Lee has resigned. The letter was read during Saturday services to parishioners at St. Philip Parish and Our Lady Queen of Peace in Boothbay Harbor. It was scheduled to be read again Sunday.

Lee was ordained in 1953 and served St. Martin of Tours in Millinocket from 1953 to 1955. From 1955 to 1971 he served at Mercy Hospital in Portland, Maine Medical Center, Boys’ Training Center and the Men’s Correctional Center. Lee served at Lady Queen of Peace from 1971 to 1985, and at St. Philip from 1985 until last year.