Paris gas explosion leaves many injured.

An explosion in central Paris has left thirty-seven people injured.

The blast took place in a building that housed a design school and the Catholic education system headquarters in Rue Saint-Jacques, in the French capital.

According to witnesses, there was a strong smell of gas before the blast but authorities said the cause of the blast had not yet been determined.

Emergency workers are searching through the wreckage of the building, with two people thought to be missing.