LINCOLN, Neb. (AP) — Officials say high carbon monoxide levels at an assisted living facility in Lincoln led to a brief evacuation of residents.

Black Hills Energy spokeswoman Brandy Johnson says a carbon monoxide leak at Lincoln Manor was discovered Wednesday morning. Residents were sent to a nearby church while firefighters ventilated the building.

Johnson says the leak was caused by faulty heating equipment. No injuries were reported.

A Black Hills Energy technician arrived at the building around 8:30 a.m. Residents were allowed back in the building around 10:30 a.m.