Dejected over the disability of their three teenage children, a couple committed suicide after poisoning all the three at Markandapuram village in Marikundu panchayat near here on Tuesday night.
The deceased were identified as K. Murugesan (50), his wife M. Krishnaveni (42), and daughters M. Thenmozhi (17), Vasanthi (16) and son M. Vasantha Kumar (14).
The police said after the husband and wife administered poison to their three children, they hanged themselves in the house.
The police said Murugesan was working as an agriculture labourer.
He was worried about the future of the disabled children and was struggling to arrange the wedding of the eldest daughter.