CUSTOMS officers in East Anglia have seized 30kg of heroin with a street value of around £2.5million hidden in car exhausts.A customs and excise spokesman said the seizure at Felixstowe in Suffolk had struck a massive blow to drug traffickers targeting the east coast and was the largest of its kind seized so far this year.

CUSTOMS officers in Suffolk have seized 30kg of heroin with a street value of around £2.5million hidden in car exhausts.

A customs and excise spokesman said the seizure at Felixstowe docks had struck a massive blow to drug traffickers targeting the east coast and was the largest of its kind seized so far this year.

The news was broken on the Evening Star website at www.eveningstar.co.uk before 6pm last night.

The exhausts were shipped from Karachi in Pakistan to Felixstowe with a forwarding address to derelict commercial premises in Stratford, East London.

The enforcement authorities in Pakistan were told and Karachi police are now investigating. Customs inquiries in London are continuing under the codename, Operation Kava.

John Barber, regional spokesman for HM Customs and Excise, said: "We've taken out an awful lot of heroin which, had it reached the streets, could have caused a lot of misery."

He added that customs and excise along the east coast played a key role in fracturing the smuggling network in the UK.

Felixstowe, the largest container port in the country, has links to every country in the world and Harwich has regular passenger links to Holland – a common corridor for class A drugs, said Mr Barber.