SAN ANTONIO -- Firefighters were busy putting out a vacant house fire Monday night.
The fire broke out just after 9:30 pm on the 400 block of Yucca street near Hampton Avenue.
The cause of the fire is still unknown, but investigators say it is suspicious.
Investigators say the fire broke out in the front of the home.
We're told damagers are estimated around $30,000.
There have been a string of fires on the east side lately, five of them have been ruled arson.
We'll continue to follow this developing story.