A Tumwater, Wash., man already charged with sexually abusing boys at a Latah County Boy Scout camp has turned himself into authorities for five additional felony charges of lewd and lascivious conduct.

Timothy Kellis, 38, is scheduled to appear in Moscow’s 2nd District Court on Thursday on one count of sexual abuse of a child younger than 16 and two counts of lewd conduct with a minor younger than 16 for his alleged conduct in 2007 as a counselor at Camp Grizzly near Harvard. Kellis was arrested April 12 in Moscow on the initial charges and was released three days later after posting bail.

The new charges stem from allegations by two additional victims.

Kellis, a band leader at A.G. West Black High School in Tumwater, worked as a teacher at Highland High School in Craigmont from 2001 to 2006, and was an assistant director for the Clarkston High School marching band from 1995 to 2006. He was also a Scout master in Clarkston.

Kellis is being held in the Latah County Jail on $50,000 bond.