Pakistan wedding blast kills four

A bomb at a wedding party in Pakistan's North Western Frontier Province has killed four people and injured a number of others, police say.

The attack took place in the Afghan-populated Jalala refugee camp near the town of Mardan, about 40km (25 miles) north-east of Peshawar.

It remains unclear who carried out the attack, while guests listened to music.

Musicians are banned from playing in some public areas by the province's governing Islamic coalition.