Pakistan's Prime Minister has ordered an inquiry into a woman's claim she was kidnapped and raped by police in retaliation for trying to highlight alleged police corruption.

The 23-year-old mother also claimed her husband was arrested in Faisalabad for allegedly forging documents for stolen vehicles and was not released even though police were paid a big bribe.

The woman claims she was detained for 15 days and raped by an officer. Police officials rejected her claims but PM Shaukat Aziz said there would be an investigation.