Carson, Calif.  —  Police in California are investigating the abduction of three children ages 9, 11 and 12, after their biological parents took them from their foster home, MyFOXLA.com reported.

An Amber Alert was issued but later canceled after it was found that the children were not abducted at gunpoint during a supervised visit, MyFOXLA.com reported.

The biological parents are believed to be driving a 2000 forest green Land Rover with the license plate number 5GKJ367, Los Angeles County Sheriff's Deputy Ruben Alvarez said.

Police said the mother has made previous threats.

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