Authorities say a man in Pakistan, angered by a rejected marriage proposal to his cousin, has killed 10 members of his extended family after years earlier killing four others over it.

Police officer Shahid Khan says the attack happened early Sunday in Pakistan's Khyber Pakhtunkhwa province in its mountainous northwest. Khan says Gul Ahmed, the man suspected of carrying out the attack, is still on the run.

Khan says Ahmed shot dead his uncle, aunt and eight cousins — including Naveeda Bibi, who he wanted to marry. In November 2014, Khan says Ahmed also shot dead his parents and two brothers over wanting to marry her. He was never arrested by police for the earlier killings.

Violence over rejected proposals occasionally strikes Pakistan.