PARIS, March 23 -- French policemen evacuated a terminal at Toulouse airport in southern Franceon Wednesday after a suspicious bag was spotted, a local radio report said.

At about 07:30 a.m. local time (0630 GMT), passengers at the Toulouse-Blagnac airport were called to leave the terminal building immediately after an unattended bag was reported in a technical hatch between runways at the airport.

Policemen searched the terminal but nothing suspicious was found.

The incident came after France tightened security at airports and throughout the public transport system following the multiple suicide bombings in Brussels, which killed at least 31 people on Tuesday.

The two suspect bombers, identified as Khalid and Brahim El Bakraoui, and a third perpetrator named Najim Laachraoui, are reported to have links with Salah Abdeslam, the suspect mastermind behind the Paris terror attacks, in which about 130 people were killed in November 2015.