CLIFFSIDE PARK, N.J. (CBSNewYork) — A possible gas leak at a daycare center in Cliffside Park, New Jersey sent four adults and two children to the hospital on Monday.

The Apple Montessori School on Gorge Road in Cliffside Park was evacuated sometime before 6 p.m. Monday.

CBS2 was told the hospitalizations were just a precaution.

The local police chief said a faulty air conditioner may have caused the trouble.