Wild Scene at Houston Gun Range

Local news reports

A 50-year-old customer returned to find a 21-year-old man that he didn't know inside his van. 

It's unclear whether the man was attempting to steal the vehicle or burglarize it. 

The customer attempted to detain the man and the two became involved in a struggle, before the suspect broke free and ran toward the street. 

A good Samaritan in the parking lot spotted the suspect running and chased him down before those two became involved in fight. Fearing for his life, the good Samaritan stabbed the suspect in the chest with a pocket knife. 

Witnesses told investigators that a second suspect then appeared, armed with a gun, and struck the good Samaritan in the head with the weapon. The good Samaritan was also injured and is expected to be OK.

Other shooting range patrons then exited the business and were able to detain both suspects, and another man and woman suspected of being with the pair while authorities arrived to the scene.

Charges of burglary of a motor vehicle are pending against him, Escobar said. 

Authorities also charged the 21-year-old man with aggravated assault, a 20-year-old man with unlawfully carrying a weapon and 21-year-old woman also with the group with burglary of a motor vehicle.