BOULDER, Colo. -- More alleged victims have come forward, claiming they were sexually assaulted by a Boulder chiropractor, police said Friday.

Matt Titchenal, 44 (pictured, left), of Lyons, Colo., was released on bond Thursday on charges of sexual assault and false imprisonment stemming from the alleged sexual assault of a patient during a treatment session last year, police said.

After the release of information about his arrest, a woman contacted Boulder Police and said that she also had been assaulted by Titchenal. A third allegation was reported to police by an outside agency, the police department reported Friday.

A 38-year-old woman told police on Nov. 5 that she was sexually assaulted last year in Titchenal's office during her treatment.

She said that she was lying nude on a table with a sheet covering her, waiting for a massage. The victim told police that Titchenal pulled down the sheet covering her and inappropriately touched her with his tongue.

Investigators filed charges against Titchenal Wednesday after the woman returned to his office with a hidden police-issued wireless listening device.

Police said that they are concerned that there may be additional victims.

Anyone with information about this case, or about Matt Titchenal, is asked to call Det. Jane Harmer at (303) 441-3381. Or to remain anonymous, call Boulder County Crime Stoppers at (303) 440-STOP and you may be eligible for a reward.