Video: Mother suspected in UK 'honor murder' implicates husband in teen's killing

London (CNN) -- Shafilea Ahmed's parents have long denied killing their pretty teenage daughter for shaming the family, but the "honor murder" case that has gripped Britain took an unexpected turn this week.

Shafilea's mother, Farzana, abruptly changed her story in court and implicated her husband, Iftikhar, in the killing, CNN affiliate ITV reported Monday.

Iftikhar and Farzana Ahmed are on trial in Chester, England, accused of killing Shafilea, 17, (pictured left) in September 2003. They have pleaded not guilty.

Her dismembered body was found on a riverbank months after she disappeared. She had been stripped of anything that would identify her, prosecutor Andrew Edis told the jury in May, according to ITV.

Newspapers, television and radio have all been reporting on the prosecution case that Shafilea's parents killed her because they felt her "Western" lifestyle brought shame on the family.

Shafilea's sister Alesha testified last month that she saw her parents kill the teen by stuffing a plastic bag into her mouth.

She said her parents were angry that Shafilea was wearing a short-sleeved, V-neck top, and no sweater, on the night she was killed.

"Just end it here," Farzana said to Iftikhar, according to their daughter. (...)