Residents told to stay inside as firefighters deal with chemical hazmat situation on Brook Street in Roslindale

Update: BFD reports the residents and firefighters were taken to the hospital as a precaution and that the chemical a resident brought to the fire station remains "unknown."

There's something in a house on Brook Street at Mt. Hope Street that's bad enough that the Boston Fire Department has brought in two decon units and nearby residents are being told to stay inside.

Three adults and one child from the house and two decon-unit firefighters were taken to a local hospital. The Canterbury Street fire station is also involved, and one of the decon units is there.