HOUSTON, Texas (KTRK) -- Houston's METRO police chief confirmed officers are now trying to identify a person who they believe sprayed mace aboard a train, sending three people to the hospital on Wednesday.

Chief Ban Tien said right now, officers are poring through surveillance video. He said he doesn't believe the person was targeting anybody specifically, but chemicals did spread through the train.

"People were yelling, people were crying," passenger Daniel Ortiz told Eyewitness News on Wednesday. "I just naturally put my face inside my shirt because I didn't know what was going on."

Tien said that while officers have identified a person of interest, they have not spoken to them.

And at nearly the same time, Wednesday afternoon, Chief Tien confirmed that a woman attacked a fare inspe

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