After a four-day trial, a federal jury found a St. Louis Park attorney guilty Thursday on five counts of distributing child porn.

Using the pseudonym "Arlobingo," 49-year-old Ian Scot Laurie used a peer-to-peer file sharing program called GigaTribe to distribute videos "depicting the sexual abuse of children," according to the U.S. Attorney's Office.

FBI investigators found Laurie had used his computer at work and home to share the images and chatted with others on the site about his "sexual interest in children."

"The sexual exploitation of children via the internet is a heinous crime," said Assistant U.S. Attorney Kate Buzicky in a statement. "Thanks to the nationwide coordination and painstaking efforts of the FBI investigators, this defendant has been brought to justice."

Laurie previously worked at law firm Laurie and Laurie with his father, Jerry. The practice specializes in employment law and commercial litigation.

Jerry Laurie said his son hasn't worked at the firm — now rebranded as Laurie Law & ADR — since the indictment.

"This situation with my son Ian is a great family tragedy," said Jerry Laurie after the conviction Thursday. "The city and the state has lost a great, brilliant lawyer who we hope to see returned to practice some day and continue to represent the employees of the state of Minnesota and the downtrodden and people who need legal counsel."