A young mountain lion is believed to have killed three marsupials at the San Francisco Zoo.
Two wallaroos and a red kangaroo were found dead earlier this week in their outdoor exhibit, the zoo said in a statement.
"Findings suggest a local wild carnivore is responsible," the zoo said. A young mountain lion was captured earlier in the week but released, and zoo officials are "investigating whether this could be the perpetrator."
That animal, released before the announcement of the dead marsupials, is being tracked through a collar as part of the University of California Santa Cruz Puma Project. The mountain lion's release could be seen on a video posted by the Oakland Zoo.
"We did not hear about these killings before the mountain lion was released," Ken Paglia, a spokesperson for California's Department of Fish and Wildlife, told ABC San Francisco station KGO.
The San Francisco Zoo said it has taken extra measures to keep animals safe, but declined to give specifics when reached by ABC News.