The Anti-Corruption Commission (ACC) on Sunday questioned three Civil Aviation Authority of Bangladesh (CAAB) engineers over graft allegations.
The three accused officials are executive engineers Md Shahiduzzaman and Md Mokabber Ali, and sub-assistant engineer Kazi Bayezid Ahmed.
Pranab Kumar Bhattacharjee, ACC spokesperson, said, "A team led by the ACC deputy director Gulshan Anwar Pradhan interrogated the three accused at the commission's headquarters in the capital's Segunbagicha area."
Earlier on February 20, ACC interrogated CAAB's chief engineer Sudhendu Bikash Goswami, superintendent engineers AKM Maksudul Islam and Md Habibur Rahman, and executive engineer Shariful Islam.
The anti-graft watchdog is currently probing into the graft allegations over the Cox's Bazar airport development project, amassing allocations of various projects and accumulating wealth beyond known sources.
The ACC sent a notice to the CAAB on allegations of its officials and staff amassing large sums of money through irregularities in the maintenance, construction, procurement and fund management.