Pakistan officials say say a three-story factory has collapsed, killing at least two people, including a child at least 10 years old.

Authorities say emergency workers have rescued at least 13 people from the rubble. Dozens remain trapped.

Officials say the building collapsed Monday in Lahore after a gas explosion.

Authorities say the factory, which produced veterinary medical products, had been ordered closed. It was not immediately clear why or why it was operating despite the closure order.