Another mass shooting: Six people were shot and wounded at a strip mall in Houston Monday morning, reports the Houston Chronicle. Police shot the gunman, who appears to have been acting alone, they announced via Twitter. "There are no reports of other suspects." The AP is now reporting that the gunman was killed, citing a police tweet that listed him as "DOA." The conditions of the hospitalized victims have not been released, nor have police speculated about a motive. The shootings were reported about 6:30am local time. (More Houston stories.)