Two Turkish engineers and an Afghan were kidnapped outside Kabul (search), an official said Sunday, bringing to five the number of workers who have been taken hostage in Afghanistan in the last three days.

Men burst into the office of a Turkish construction company southeast of the capital Friday, beat and tied up an Afghan staff member, then abducted two Turkish workers and another Afghan, said Nick Downie of the Afghanistan NGO Security Office (search).

The office protects aid workers in the country.

The three hostages appeared to be taken to another province, and no contact has been made with them or their abductors, Downie said. The Afghan Ministry of the Interior and the Turkish Embassy were investigating the attack.

Interior Minister Ali Ahmad Jalali (searchtold reporters in Kabul on Sunday that the three workers disappeared while building a well southeast of Kabul. Government investigators were trying to determine if they had been kidnapped or merely targeted by criminals, he said.

On Saturday, two Indian highway workers were kidnapped by suspected Taliban militants in southern Afghanistan.

On Nov. 30, Taliban militants freed a Turkish worker after holding him hostage for about a month in southern Afghanistan.