Shahjahanpur: A 17-year-old girl was allegedly beheaded by her brothers in Jalalabad area as they were opposed to her marriage with their cousin, police said today.

Phool Jahan was having an affair with her cousin Achchan and both the families were ready for the marriage, but the girl's brothers Gul Hasan and Mohammad alias Nanhu were against it, Senior Superintendent of Police Bablu Kumar said. He said that on August 17 afternoon, Gul and Nanhu saw Phool Jahan visiting Achchan's house in Kalan village.