LINCOLN, N.H. (AP) – Nearly 50 residents of a condominium complex were treated for carbon monoxide poisoning early Sunday morning.

Police started to receive calls from the River Green complex around 12:30 a.m. A check of the building revealed high levels of carbon monoxide, and the building was evacuated.

In all, 45 people were taken to area hospitals. Eight were being held overnight, while the rest were treated and released.