Security officials say police have detained a man suspected of shooting this week at a bus heading from northern Lebanon to neighboring Syria.

Monday's shooting left one Syrian passenger dead and raised concerns about the timing — coming just days after Lebanese Prime Minister Saad Hariri's highly charged visit to Syria.

The officials say the suspect, identified as Shawki al-Nazer, had argued in the past with the bus driver. He opened fire on the bus from a nearby rooftop.

The officials said on Wednesday the suspect had no political motive. They spoke on condition of anonymity because they were not authorized to speak to the media.

Hariri has blamed Damascus for the 2005 assassination of his father. Syria denies involvement.