People were being allowed back inside Disneyland's Toontown on Tuesday evening after a dry ice "bomb" explosion earlier in the day.
The dry-ice device appeared similar to other devices that have exploded in Anaheim neighborhoods in recent months, Sgt. Bob Dunn of the Anaheim Police Department said.
"Unfortunately, it's an all too-common experience," Dunn told The Times.
He said police were investigating whether there was any connection between those explosions and the blast at Toontown, which forced authorities to clear the popular area about 5:30 p.m.
Dunn said Toontown was reopened about 7:30 p.m.
It appeared that the dry ice was placed in a plastic bottle and left in a trash can. The blast was confined to the trash can, and there were no apparent injuries, according to police.
Dunn said investigators had not established a motive or determined why Toontown was targeted. The area is popular among parents and their young children.