A lake in California is being searched by police investigating last week’s shootings in San Bernardino, in which 14 people were killed.
Divers from the FBI began searching the waters of Seccombe Lake Park, two miles (3km) from the site of the attack.
The two suspects are thought to have visited the park on the day of the shooting, an FBI spokesman said.
The attack is being investigated as an act of terror, the deadliest in the US since 9/11.
Tashfeen Malik and husband Syed Farook opened fire at a workplace event for Farook’s colleagues, killing 14 and wounding 22.