POLICE in the region were urged last night to show greater vigilance in order to prevent further drug-related deaths in custody.

A report by the Police Complaints Authority (PCA) found that about a third of such deaths could have been prevented if officers had intervened quicker.

The report examined 43 deaths in custody between 1997 and last year, and called for more training for police officers and custody staff in drug awareness and emergency first aid.

Three deaths were recorded in the Northumbria Police force area during the period, and one in Cleveland.

In a high-profile case, teenager Gareth Brogden, who acquired the nickname Balaclava Boy for his criminal exploits, collapsed and died at Hartlepool police station after swallowing a condom filled with heroin.

His death, three years ago, sparked an investigation by the PCA that eventually led to three Cleveland Police officers being disciplined.

Chief Superintendent George Campbell, of North-umbria's Police, said: "The fact there have been only three drug-related deaths in custody in the past five years in Northumbria is testament to the professionalism of our custody staff.

"We have laid down procedures in relation to the health and welfare of people being held in custody and if someone's condition gives rise to serious concern our officers will not hesitate in calling for immediate medical assistance, including hospital treatment."

A spokeswoman for Cleveland Police said guidance was issued to officers on how to deal with drug-related incidents in custody.