According to security sources, the arrested suspects were involved in Jiwani airport attack in last month.
The arrested men said to be affiliated with an outlawed group.
The arrested suspects have been transferred to an undisclosed place for interrogation, security sources said.
Two engineers were killed in a militant attack on Jiwani aiport on August 30 in Balochistan’s Gwadar district.
Unknown gunmen killed an electronics engineer identified as Khalilullah during the attack. They had also kidnapped another engineer Mehmudullah Niazi from the airport. The bullet-ridden body of the abducted engineer later found from a nearby area.