A pickup truck has gone through the ice on a southern New Jersey river. State police say no people were found inside it but a dead dog was.

Two men are being questioned and could face criminal charges.

Authorities say a witness called Toms River police around 12:15 a.m. Sunday to report a small truck had just driven onto the frozen river in the Ocean County town. Responding officers saw the truck, but it disappeared into the water soon after.

A Coast Guard helicopter crew responded. A rescue swimmer lowered down to the river soon spotted the truck.

State police were notified. A rescue effort involving several agencies was launched.

The truck was found around 10:20 a.m. about 100 feet off Pine Beach. Crews initially couldn't see inside because the truck's windows were tinted.