People run to escape New Orleans truck attack

US authorities have said they believe multiple people were involved in an attack in New Orleans that killed 15 and wounded dozens on New Year's Day.

The driver of a pick-up truck that sped into large crowds in the city's French Quarter has been identified as Shamsud-Din Jabbar, a US Army veteran from Texas, who was later killed in a shootout with police.

CCTV footage shows people running to escape as the attack took place.