LISBON, March 28 (Xinhua) -- An Afghan man armed with a large knife attacked the Ismaili Muslim Center in Lisbon on Tuesday, killing two people, Portuguese authorities have reported.

Police managed to immobilize the attacker with a shot to the leg, before transporting him to hospital. Other people also sustained injuries in the attack.

The Ismaili Center and the hospital where victims are being treated are now under police protection.

Meanwhile, Portuguese Prime Minister Antonio Costa has expressed his solidarity with the Muslim community and the victims' families. Although he said it is too early to speculate on the motive for the attack, he indicated that it was an isolated incident.