DURHAM, N.H. (AP) — The New Hampshire Fire Marshal’s office is investigating a suspicious fire at the University of New Hampshire in Durham.

School officials tell WMUR-TV (http://bit.ly/u6kOQR ) that firefighters arrived at a storage building at about 8:30 p.m. Saturday. The roof was engulfed in flames and the front of the building was opened up.

The university says the concrete building is composed of five bays, one housing bales of recycled cardboard and the rest storing salt.