Kottayam: Three of a family were found dead at Parampuzha near Manarkkad in Kottayam on Sunday morning.
The deceased are Lalppan(58), Prasanna(55) and their son Praveena(23).
Sources said their throats were slit and acid was poured all over the bodies.
It is suspected to be a case of murder.
The police have launched a probe into the incident.