Quetta- Police on late Saturday night claimed to have arrested the man accused of killing Balochistan MPA Handery Masieh.
Police said that Mohiuddin, a security guard of the slain MPA, was arrested somewhere in Quetta.
Earlier, Masieh's family said he was attacked by his personal guard. Speaking to media, Masieh's brother said he was gunned down by his guard outside their residence.
Hospital sources said the MPA was shot in the head and neck.
Prime Minister Nawaz Sharif had directed the Balochistan government to take immediate action against Handery Masieh's murderer.
Masieh who was affiliated with the National Party was elected from NM-65 on a reserved seat for minorities.