Government offices in Sweden will fly flags at half-mast Saturday to honor the victims of a hijacked beer truck that plowed into pedestrians at a Stockholm department store, Prime Minister Stefan Lofven was quoted by Daily Mail online as saying.

Lofven calls it "a day of mourning for Sweden."

He says in a statement that "the attack targeted our society at its most vulnerable - when we are going about our daily lives."

Four people were killed and 15 more were wounded Friday in what the prime minister has called a terrorist attack.

Source: MENA