Sent_en: 2zh He was identified as the arsonist behind the fire after a security camera saw his car several times and samples taken from the scene matched those found in his girlfriend's house.
Sent_yy: 在安全摄像头多次看到他的车，并从现场采集的样本与在女友家中发现的样本相符之后，他被确认为火灾背后的纵火犯。