Authorities closed a section of University Boulevard near Dennis Avenue on Wednesday morning as firefighters investigate a fire at a school and Masonic lodge.

Two eastbound lanes on University Boulevard are closed while fire officials investigative a blaze at National Children’s Center, a school for people with developmental disabilities. A Masonic lodge also shares the University Avenue building.

Authorities said a fire alarm went off around 4:30 a.m. Wednesday. Montgomery County police and fire officials shut down all lanes at the intersection early Wednesday but later opened most of the roadway to traffic.