Tulsa fire crews were kept busy Monday morning at a northeast Tulsa apartment complex.
Investigators say a fire started inside the office building of the Addison Apartments near Addison and Mingo just after 6 AM Monday.
Fire crews aren't sure what started the fire, but say potentially dangerous swimming pool chemicals were kept in the room next door.
Damage was contained to one room. No injuries were reported.
The cause is under investigation.