POLICE seized more than 20 kgs of drugs from a Mercedes-Benz stopped on the M4 at Chieveley last night.

Supt. Chris Shead, of Thames Valley Police, said: "This is a substantial seizure of what we believe to be heroin which would be worth millions of pounds if sold on the streets.

"It is a major success in our attempts to prevent the sale of drugs and minimise the harm they cause to our communities".

A 23-year-old man was arrested and is being held in custody awaiting interview.