WEST HARTFORD, Conn. — Police have found homemade pornography on videos seized from a man charged with unlawfully keeping a teenage girl from her family for a year, a law enforcement source close to the investigation said.

The source said investigators are trying to determine the identities of a number of girls in the videos, which are of poor quality and were apparently posted on the Internet at various times. Adam Gault, a West Hartford dog trainer, is charged in the disappearance of 15-yearold Danielle Cramer of Bloomfield.

Bloomfield police disputed the information Friday, saying they did not know what was recorded on videotapes taken Wednesday from Gault’s West Hartford home.

Danielle has told authorities that Gault was using her for Internet sex shows and modeling. It was not clear whether Gault, 41, participated in the shows.

Danielle was found Wednesday in a hidden space under a staircase as police were executing search warrants aimed at finding videos and camera equipment and getting DNA from Gault to compare to specimens found on Danielle’s underwear.

Sources say the videos were taken at Gault’s home.

Bloomfield police confirmed Friday that authorities seized videotapes from Gault’s home and found couches, bedding and a tripod at a commercial space that Gault rented in Bloomfield.

Authorities have widened their investigation to determine whether Gault preyed on young girls in other parts of the country.

Gault is being held on $1 million bail following his arraignment Thursday in Superior Court in Hartford, along with Ann Murphy, 40, and Kimberly Cray, 26, who also were living at the home where Cramer was found last week.

All three were charged with conspiracy to commit risk of injury to a minor, conspiracy to commit unlawful restraint and interfering with police. Murphy’s bail was set at $750,000 and Cray’s at $500,000.

Police said Danielle failed to return to her Bloomfield home in June 2006 and had been in Gault’s control since then. Police also said evidence has surfaced that Gault went so far as to change Danielle’s identity to hide her whereabouts. Sources Friday said Danielle was made to assume the last name of Murphy to conceal her identity.

Nearly two weeks before Danielle disappeared, Gault went to the Bloomfield Police Department to file a sexual abuse complaint on her behalf against a friend of her brother and to convince state officials to remove her from the home.

Michael Georgetti, the attorney for Cray, has said that the accused allowed Danielle to stay at the home to protect her from “sexual and physical abuse.” He also said Danielle was not held captive and that she attended school and had a cell phone.