DRUG users are being warned about the risk of potential harmful batches of heroin after a man died and a woman remains critically ill in hospital.

Cleveland Police believe the incidents are linked to heroin which has possibly been laced with fentanyl or carfentanyl.

The man, 34, from Hartlepool died on Sunday.

The woman, 30, also from Hartlepool, was taken to hospital on Saturday and is still receiving treatment.

Fentanyl is 100 times more potent than street heroin with carfentanyl 100 times more potent than that. Fentanyl is an anaesthesia used to help prevent pain after surgery or other medical procedures.

  • Anyone who has information about drugs activity in their area is asked to contact police on 101 or anonymously to Crimestoppers charity on 0800 555 111 or www.crimestoppers-uk.org