DENVER -- A 48-year-old Denver Salvation Army pastor is under arrest for allegedly molesting two young girls.

Walter Madrigal was jailed Tuesday on a $50,000 bond following his arrest at his home on charges of sexual assault on a child by one in a position of trust, sexual assault on a child, and sexual assault on a child -- pattern of abuse, all felonies.

Madrigal is a pastor for the Salvation Army's Red Shield Center in northeast Denver, according to Denver police. It was not known if the alleged victims belonged to the congregation at the Red Shield Center, 7NEWS reported.

His arrest caught local Salvation Army officials by surprise because they run background checks on all employees.

"We've never had any complaints, or any indication that there was anything to be concerned about," said Col. Harold Drodin, of the Salvation Army. "We are very concerned about proper conduct and the responsibility towards minors and vulnerable adults."

Madrigal was a Salvation Army volunteer in California before moving to Colorado four years ago to work full time for the agency.

Police would like to talk to anyone with information about the case. Callers can remain anonymous by calling crime stoppers at (720) 913-7867.