The U.S. Attorney's Office in Denver confirmed on Thursday that it is investigating an El Paso County man accused of possessing child pornography.

The FBI arrested Francis Calar, 53, on Monday while he was sitting in his vehicle, which was parked in a public lot at Fort Carson.  Calar is a civilian contractor at the post.

According to the arrest document, military police saw Calar touching himself while looking at an image of child pornography, and that he admitted to downloading such images on his computer.

Calar was booked at the El Paso County Criminal Justice Center on suspicion of possessing child pornography.  The crime is punishable by a maximum of 10 years in prison and a fine of up to $250,000 for a first offense. 

Calar is free on bond.

The arrest document further reveals that Calar recently resigned as girls' volleyball coach at Mesa Ridge High School in Widefield District 3.  He also coaches girls' youth volleyball and boys' youth baseball.

Samantha Anderson, spokeswoman for District 3, said the district so far has no reason to believe any students are victims of Calar.

Jeff Dorschner, spokesman for the U.S. Attorney's Office in Denver, said more details about the Calar case will be released Friday.

"We are wondering if there are any victims associated with his case," he said.  "There will be more information to come."