A strong earthquake has hit eastern Turkey.

The U.S. Geological Survey says the magnitude 7.3 quake struck Sunday afternoon in Van province at a depth of 7.2 kilometers.

Turkey's state-run Anatolian news agency says several buildings collapsed and several aftershocks have been felt.

Turkey's Kandilli Observatory recorded the quake's magnitude at 6.6 and 5 kilometers deep.

There is no immediate word of casualties.