Islamic  State  claimed responsibility for two bomb attacks that killed at least 30 people in Brussels on Tuesday, a news agency affiliated with the group said.

" Islamic  State  fighters carried out a series of bombings with explosive belts and devices on Tuesday, targeting an airport and a central metro station," the Amaq agency said.

RELATED: Attacks on Brussels airport, metro kill at least 30

The attacks on Brussels airport and a rush-hour metro train in the Belgian capital came four days after Brussels police captured the prime suspect in attacks by the jihadist groups in Paris.

" Islamic  State  fighters opened fire inside Zaventem Airport, before several of them detonated their explosive belts, as a martyrdom bomber detonated his explosive belt in the Maalbeek metro station," Amaq said.

The attack triggered security alerts across Europe.