An arsenal was discovered this past weekend in the apartment of a Columbia University professor after his roommate, Ivaylo Ivanov, accidentally shot himself. Police removed seven homemade pipe bombs, a 9 mm shotgun, a rifle, a crossbow and arrows, a machete, ammunition, gun silencers, and several bulletproof vests from the dwelling that neighbors say is owned by Michael Clatts, an AIDS researcher at Columbia’s Mailman School of Public Health. One of the suspected bombs is reported to have been inserted into a toy football.

Police are investigating whether Ivanov has ties to terrorist groups. (The New York Sun)