(CNN) -- The FBI and local Texas authorities are investigating reports of gunshots Tuesday striking the north Houston office of U.S. Rep. Gene Green, authorities said.
"We are looking into it," said Shauna Dunlap, a spokeswoman for the FBI in Houston.
It's unclear if the congressman, a Democrat, or his office had been targeted or if the shooting was a random crime, Dunlap said.
Asked if there had been any recent threats against Green, Dunlap said, "Not that we're aware of, but we're continuing to work with the congressman's staff to find out information."
The FBI was also investigating whether bullets struck a nearby building belonging to the Lone Star College, Dunlap said.
Sgt. Kimberly Schneider of the U.S. Capitol Police said her agency was aware of the incident and was working with other police departments.
CNN's Vivian Kuo, Carol Cratty and Michael Martinez contributed to this report.