Ammar Harris is shown in a booking photo from a 2012 arrest in Las Vegas. Police have identified Mr. Harris as a suspect in a shooting that sent a Maserati into a taxi that exploded, killing three people on Feb. 21, 2013, in Las Vegas. (AP Photo/Las Vegas Metropolitan Police Department)

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Ammar Harris is shown in a booking photo from a 2012 arrest in Las Vegas. Police have identified Mr. Harris as a suspect in a shooting that sent a Maserati into a taxi that exploded, killing three people on Feb. 21, 2013, in Las Vegas. (AP Photo/Las Vegas Metropolitan Police Department)