Federal agents are trying to identify who threw small explosive devices at a lawyer's office and an oil company in Hurst.
Firefighters discovered Molotov cocktails when they responded to a report of a fire in the 1200-block of Southridge Court on Sunday morning, said Andrew Young, a spokesman for the U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives.
The ATF is leading the investigation, he said.
"We have several suspects," Young said, adding it's too early to say if the attacks were random or one or both of the offices were targeted.
The firebombs were hurled into the Weatherspoon law firm and the neighboring Falcon Petroleum Resources.
The device at the oil company did not ignite, but a fire did extensive damage.
Evidence collected at the scene has been sent to an ATF laboratory in California. Agents are also reviewing surveillance video in the area, he said.
Hurst assistant Police Chief Richard Winstanley said the fire was reported about 8:30 a.m. but referred questions to the ATF.
Ginger Weatherspoon, who specializes in divorce law, said she believes she was the target.
"In this field you do make a lot of enemies," she said. "Everybody believes I was the target."
Nobody from Falcon Petroleum returned a call seeking comment.
Falcon's website says the company is involved in the "acquisition, development, exploration, production and marketing of natural gas and crude oil."
Young said anyone with information on the suspects can call the ATF's Fort Worth office at 817-862-2800.