CLARK FREEPORT -- Security guards of the Clark International Airport Corporation (CIAC) passed the recently conducted random drug tests, according to CIAC president Aaron Aquino.

"The first batch of 39 security guards all passed the drug tests led by the manager of our aviation security department," said Aquino, former chief of the Philippine Drug Enforcement Agency.

CIAC's security personnel are assigned 24/7to various posts at the 277-hectare aviation complex managed by the agency.

An additional batch of 36 security personnel, including relievers, will also undergo random tests using urine samples facilitated by a private diagnostic laboratory company, Aquino added.

"These surprise tests are conducted as our fit-to-work requirement for all sentries of the Clark Civil Aviation Complex and we want to ensure that CIAC is a drug-free workplace," Aquino said.

The aviation complex is home to the privately-run Clark International Airport, as well as the mixed-use business district Clark Global City, and currently around 45 locators in cargo and aviation-related businesses.