Islamabad, Oct 6 (IANS) Pakistan Customs officials have detained 152 NATO trailers and oil tankers at the Chaman border crossing carrying fuel and other supplies for coalition forces in Afghanistan, a media report said Wednesday.

‘Some tampering was found in NATO supplies documents presented at a Customs checkpoint in Chaman for clearance,’ sources told Dawn.

They said US officials in Pakistan had approached Pakistan Customs authorities Tuesday with a request to release these oil tankers and trailers.

‘Yes, US officials have contacted us with a request to clear these 152 trailers and oil tankers so they could take NATO supplies to Afghanistan,’ the sources said.

They said that Customs authorities had informed US officials about tampering with the documents.

‘Trailers and oil tankers will not be allowed to go to Afghanistan unless their documents are cleared,’ they said.

They said that Customs authorities sought original documents of these vehicles and supplies they were carrying to NATO forces.

The detained trailers and oil tankers were parked at the Pakistan-Afghanistan border crossing in Chaman.

‘No vehicle carrying NATO supplies will be allowed to go to Afghanistan without checking,’ the sources said.