Disclosures of her overtures to extremists abroad surfaced as the investigation of the Dec 2 shooting rampage in San Bernardino, about 60 miles (100 km) east of Los Angeles, took a new turn with divers searching a small lake near the scene of the massacre.

One source said investigators have little, if any, evidence that Malik or her husband, Syed Rizwan Farook, 28, had any direct contact with Islamic State, which has seized control of large swaths of Syria and Iraq and claimed responsibility for assaults in Paris last month that left 130 people dead.

FBI Director James Comey has said Malik and Farook declared at about the time of their attack that they were acting on behalf of Islamic State, which in turn has embraced the couple as among its followers.

The husband and wife were killed in a shootout with police hours after they opened fire with assault rifles at a holiday gathering of Farook's co-workers at the Inland Regional Center social services agency in San Bernardino.

Yesterday, a team of divers from the FBI and San Bernardino County Sheriff's Department began searching the waters of Seccombe Lake Park, about 2-1/2 miles (4 km) north of the Inland Regional Center, seeking additional clues in the mass shooting.

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