Issam Elabbar, 31, of Corona, Queens, was charged with the murder, police said. After the murder, detectives released surveillance video showing two hooded would-be thieves trying to steal a chained bicycle outside Arriaga’s apartment building, saying they were being sought for questioning in the murder.“This is what senseless gun violence does – it destroys families,” Police Commissioner Dermot Shea said after Arriaga was killed. Her teenage son found her in her third-floor bedroom with a bullet wound to the head, according to reports. She had two other children and was married. That number totals more than all of last year's homicides and is the most since 2013, when there were 335 slayings in the city's five boroughs, the paper reported.