TULSA, OK -- A series of arson fires kept Tulsa firefighters busy.
The first fire was at the Normandy Apartments in the 6200 block of East 38th Street.
At about 11:30 p.m. Sunday, a security guard spotted a fire in an outdoor hallway.
The guard saw two people run off and gave chase. He didn't catch them, but he did call for help.
Tulsa Fire officials say the security guard and a 9-year-old boy had to be treated for smoke inhalation.
Damage to at least one apartment in the complex was significant and Tulsa Police are investigating.
At about the same time, Tulsa firefighters were called to the 500 block of East 53rd Street North.
Tulsa Police say several people started arguing and moments later, someone set fire to clothes and other items on a bed.
Police say a man cut his arm trying to get people out of the home.
No one has been arrested, although police officers had to threaten to take one person to the Tulsa County jail for getting in the way of the investigation.
At midnight, Tulsa Fire answered an emergency call to the 4600 block of North Johnstown. Upon arrival, firefighters found flames shooting out of the windows and smoke was coming from the roof of a home.
The blaze gutted the home.
Fire officials say it was a vacant house with no utilities, but someone had lit two bedrooms on fire.
No one was hurt.
Several hours later, Tulsa firefighters were called to the 800 block of East 46th Street North for a car fire.
A passerby saw the car burning and woke up the homeowner.
Fire investigators say someone lit a rag and stuck it in the gas tank.
No one has been arrested.