The incident occurred in Gollapalli village.
A land dispute is believed to be the reason for the suicide attempt by the family residing near the house of a local leader of the Telangana Rashtra Samithi (TRS).
G. Venkataiah and his four sons consumed pesticide. Locals admitted them to a hospital in Mahabubnagar. Two of them died on the way while the condition of two were critical. Venkataiah is said to be out of danger.
Police registered a case and were carrying out an investigation.