Bosnian Marko Boskic, 40, was arraigned in federal court in Massachusetts Friday and pleaded not guilty to charges that he lied on his US immigration applications for refugee and permanent resident alien status. A federal grand jury issued an indictment a few days ago after it found that Boskic did not disclose his military history, including his former membership of the 10th Sabotage Detachment, a unit which participated in 1995 executions of over 1,200 Muslim Bosnians near Srebrenica.

Boskic faces four counts of document fraud, each with a 10 year maximum sentence, along with one count of making false statements. Boskic also faces deportation to Bosnia-Herzegovina where he could be prosecuted as a war criminal. AP has more.