Member Prof Maniruzzaman Miah and asked him to stop activities which the caller claimed "are hampering the commission's functioning."

"The caller identified himself as a student who stays in Sweden and said in Bangla that I am obstructing the commission's activities," Prof Miah told The Daily Star yesterday.

"It (the allegation) is not true," said Prof Miah, who was locked in disagreement with the ACC chairman and other member over several decisions and steps including the inclusion of the Bureau of Anti-Corruption (Bac) staff in the commission.

"Formation of the commission is a good step but you're obstructing its activities. Stop this," Prof Miah quoted the caller as saying.

The former Dhaka University vice-chancellor said he could not realise whether the person was calling from Sweden or Dhaka.

"I invited him to my office for a talk today and waited for him all day long, but no-one turned up," Miah said yesterday. "I've learnt at the office today that one of the five Bac directors we asked for withdrawal has relatives in Sweden," he added.

Meantime, ACC Commissioner Maniruddin Ahmed yesterday sat with four of the five directors and received a list of the corruption allegations under investigation.

"I sat with them (directors) for knowing everything as they may be withdrawn anytime," Maniruddin told The Daily Star.

On letters seeking the whereabouts of government vehicles of different projects under 22 ministries, he said, "After sending letters to 13 ministries, yesterday we approved sending letters to rest of the ministries."

The planning ministry earlier informed the commission about 4,230 vehicles, which were purchased for various government projects under 35 ministries. The vehicles are being used for personal purpose on completion of the projects.

Maniruddin said most of the nine ministries who sent their reply earlier did not provide adequate information about the vehicles being misused. Four other ministries did not even reply to the commission's letter.

"We're again sending letters to them seeking complete information," he said, adding that the ministries will get 15 days to reply.

Former Bac director Lt Col MA Hannan Mridha, one of the five directors, has been tasked with sending the letters.