Unidentified assailants attacked the residence of National Party (NP) chief Dr Abdul Malik Baloch in Turbat on Sunday.
NP sources said that a grenade was hurled at the residence, which went off with a bang. The explosion luckily caused no major damage except breaking windowpanes.
Meanwhile, police and law-enforcement agency officials cordoned off the area.
NP spokesman Tahir Bizenjo said the house came under attack when the party chief was presiding over a meeting. He said that no loss of life has been reported.