The head of the Venezuelan Anti-drug Bureau (ONA) Colonel Néstor Luis Reverol Thursday once again branded as irresponsible and groundless the recent remarks the US Drug Czar John Walters made against Venezuelan anti-drug efforts.

Walters claimed that President Hugo Chávez allowed the Venezuelan territory to be used "as a highway for drug traffic to Europe," the official news agency ABN reported.

On Wednesday, Venezuelan Ambassador to the Organization of American States (OAS) Jorge Valero determinedly rejected Walters' declarations.

Reverol Thursday hailed Valero's presentation at OAS as remarkable, saying the diplomat based on a document both the ONA and the Venezuelan Foreign Ministry prepared to reply to the US.

Reverol stressed that Venezuela has always struggled to eradicate drug smuggling.