A 6.4 magnitude earthquake has struck Albania, bringing down buildings and leaving people trapped under rubble.

At least 13 people have died. One man was killed after jumping from a window in panic, a defence ministry spokeswoman said.

The quake hit 34km (21 miles) north-west of the capital, Tirana, in the early hours of Tuesday.

Hours later, a separate earthquake struck the city of Mostar in Bosnia. There were no reports of casualties.

Albanian Prime Minister Edi Rama wrote on Twitter: "We have victims. We are working to do everything possible in the affected areas."

More than 600 people have been treated in hospital, Albanian state media reported, including more than 300 in Tirana and in the coastal city of Durres.

Schools will be closed for the day.