Complex sentence: Khetrans have very good relationships with the Bugtis.Sardar Tariq Mehmood Khetran's (mazrani) mother is Nawab Akbar Bugti's sister.
Split into simpler sentences: Khetrans have very good relationships with the Bugtis. As mentioned before Sardar Tariq Mehmood Khetran's (mazrani) mother is Nawab Akbar Bugti's sister.