The deadly confrontation happened at a Valero gas station on FM 1960 near Kuykendahl in northwest Harris County.
According to authorities, there were four people -- two men and two women -- in a car getting gas when a fifth person came up and assaulted one of the women. The suspect left right after the alleged attack.
The woman who was hit and one of her male companions went into the store to get some ice for her wound. That is when the suspect apparently came back to the scene but this time with a rock in his hand.
"He assaulted the female, left the scene, came back on foot with a rock. He threw the rock trough the back window of their vehicle," said Sgt. Ben Beall with the Harris County Sheriff's Office. "The two male companions chased this guy down, caught up with him over here by the Shipley's Donuts. They were holding him when deputies arrived. When deputies approached him the male was unresponsive."
The suspect died at the scene. They don't know what caused the suspect to die.
Police say the people who were attacked are being questioned. The woman who did suffer a wound was taken to the hospital to be checked out.