It happened Wednesday afternoon at the Meadows of the Views apartments on Dairy Ashford near Westheimer.
Witnesses saw someone throw something -- possibly a Molotov cocktail -- onto a balcony of an apartment and flames erupted.
About 60 firefighters responded and had the blaze out within about 15 minutes, but not before it heavily damaged two apartments and caused smoke and water damage to at least six others.
"One of the police cars seen the smoke, he patrols this area and he comes responding immediately and he was approached by serveral people saying that they had seen some people actually throw something on the balcony of this apartment," Houston Fire Department Spokesman Jay Evans said.
No one was hurt. So far, no arrests in the case.
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