A shopping center in Manchester, England, was evacuated and witnesses said they heard a "big bang" on Tuesday, just hours after a suicide bomber killed 22 people and injured 59 in the same area of the city.
Scores of people ran away from the center, a Reuters witness said.
"There are people coming out holding hands," a Reuters photographer said.
An explosion rocked the indoor arena in the English city of Manchester on May 22 right after a concert by American pop singer Ariana Grande, killing 22 people and leaving 59 wounded.