The following is taken from Wikipedia:
At the age of 36, Big Hawk was killed on Monday night May 1, 2006 at about 10:30pm in Houston. It is alleged that he was on his way to visit a friend to play dominoes. After finding that his friend was not there yet, he proceeded to walk down the side of the house, where he was shot multiple times. The only lead Houston police have is a witness who claims to have seen a small white compact car leaving the scene shortly after the shooting. He had been working on bringing together all the remaining Screwed Up Click members to record a group album called 'The Takeover'.For more on HAWK check out Houston So Real and make sure you download the tribute that was done for him on Damage Control last year.