One person is in grave condition and three others are being treated after a dangerous drug lead to a hotel evacuation in Woodland Hills.

By Kevin Tripp, KABC

Los Angeles Firefighters say a total of four people were exposed to fentanyl at an Extended Stay America Hotel on Ventura Boulevard. The hotel was evacuated shortly after they responded to the seven a.m. call. Three people were reported to be in stable condition. The hazmat team arrived and cleared the hotel. Fentanyl is a synthetic opioid that’s 10 times stronger than morphine and is often mixed with street drugs. It can be dangerous even if it’s just floating in the air.