gunshot after an overnight manhunt. officials say this 72-year-old man murdered 11, injured nine more. opened fire during lunar new yore celebrations at an asian american dance hall saturday night. we are so surprised. here is safe. i m scared. reporter: this was apparently an old man attacking the middle-aged and older out dancing. but why? we still are not clear on the motive. the investigation continues. reporter: apparently the suspect taught dance here at one point, met his now ex-wife at this very dance hall. they divorced in 2006. she told cnn he could be quick to anger if he missed a dance step, for example. was it an issue of being disgruntled or an issue of domestic violence? we don t know, unfortunately. i was told in the past he was a frequent attendee of this dance hall. reporter: his last known address, a trailer home in a senior community further east in hemet was sevearched. hemet pd came by twice alleging fraud, theft and poison allegations invo