Thiruvananthapuram: In the suspected suicide case, the couple died on Tuesday who was allegedly toxic in their homes near Neyatyatinkara on Tuesday.
Kesavan, 55, and his wife, Selvam, 50, living in Convent Road near Neyatyatinkara is the deceased.
Police said that Kesavan was a goldpayer, who runs a small jewelry shop.
Allegedly that the couple consumed the cyanide solution which was usually used by Goldsmiths.
Kesavan also suffered paralysis under his waist for the past 25 years and was limited to wheelchairs.
The 19-year-old women’s daughter, Haripriya found her parents died in their room, police said.
The probe is on whether family faces a financial crisis that can make them take this extreme step, added the police.