"The United States strongly condemns yesterday's suicide bombing at the Omran Cafe in the Jabal Mohsen neighbourhood of Tripoli, Lebanon," said Marie Harf, the State Department's deputy spokeswoman.
"The United States will continue its strong support for the Lebanese security forces as they protect the Lebanese people, combat violent extremists, and preserve Lebanon's stability, sovereignty, and security," she said.
The attack, which hit a Tripoli neighbourhood inhabited by members of Syrian President Bashar al-Assad's Alawite sect, was claimed by the Syrian branch of Al-Qaeda.