The 12 people arrested in the early hours after the weekend London Bridge attack have all been released without charge, according to British police.

The terror attack Saturday left seven people dead and nearly 50 others injured.

All were detained Sunday in the Barking district of east London which authorities say was home to the two attackers who have been publicly identified.

The three attackers were fatally shot by police after veering off the road and barreling into pedestrians with a van on the bridge. Police and witnesses say the men then exited the vehicle with large knives and attacked people at bars and restaurants in nearby Borough Market.

The attack unfolded quickly, and police say officers fatally shot all three attackers within eight minutes.

ISIS has claimed responsibility for the attack.

It marks the second terror attack in the United Kingdom in less than two weeks after a suicide bombing killed 22 people and injured more than a hundred others in Manchester.