CONCORD - Jury selection begins Tuesday morning in the U.S. District Court trial of Manchester attorney Lisa Biron, 43, on charges of sexual exploitation of a child, possession of child pornography and transporting a 14-year-old to Canada to make child pornography.

At Biron's arraignment Thursday in U.S. District Court on superseding indictments, U.S. Attorney John Kacavas requested an order barring Biron from contact with the subject of the videos.

Kacavas told U.S. Magistrate Judge Landya McCafferty that Biron, who has been held without bail since her initial arraignment in U.S. District Court in November was putting pressure on the victim during telephone conversations, coaching the victim about what should and shouldn't be said in court.

Biron's attorney, James Moir, said Biron had not previously been barred from contact with the teen.

Police began investigating Biron, a Manchester lawyer since 2008, on Sept. 29, after receiving a tip that there was child pornography on her computer. She was arrested at her home in Manchester on Oct. 9, 2012, on seven counts of possession of child sex abuse images. But the FBI apparently continued investigating the origin of the digital videos and photos allegedly found on Biron's laptop.

Federal prosecutors say that Biron transported the girl on May 25, from New Hampshire to Ontario, Canada, and coerced her into performing sexual acts with another person so that they could be recorded.

The four digital videos and a digital photograph were made over a four-day period between May 25 and May 28, 2012, according to prosecutors.

Manchester police began the investigation in September 2012, after a man reported he had seen child pornography on Biron's computer.

Investigators seized a computer and Biron was arrested based on evidence recovered from that computer, according to police news release.

Bail was initially set at $35,000 and Biron was scheduled for arraignment Oct. 26, 2012, in Circuit Court-Manchester District Division.

Biron, who waived reading of the charges at her arraignment, could enter no plea to seven felony counts of possession of child sexual abuse images, so a probable cause hearing was set for Nov. 16.

At Biron's arraignment, police prosecutor Lt. Ron Mello requested two changes to existing bail conditions, which include no contact with the 14-year-old girl in the images and include a bar on unsupervised contact with anyone under age 18,

Judge William Lyons approved adding conditions that required Biron to surrender her passport and that of her daughter and to have no computer access.

When Biron appeared in Circuit Court for the probable cause hearing Nov. 16, she was arrested by FBI agents on federal child pornogoraphy charges and the case entered the federal court system.

The FBI, Customs and Border Patrol, and Immigrations and Customs Enforcement investigated the case with the help of Manchester police.