The grandson was later caught by Mangalapuram police. (Representational)
An elderly couple was allegedly hacked to death by their 25-year old grandson in this central Kerala district, police said on Monday.
The incident came to light when relatives of the couple went there to give them food, an officer of Vadakkekad police station said.
"We received information about the killing of the elderly couple in the morning around 9 AM and immediately lodged a case of murder," the officer said.
The officer said that the grandson, who was not there in the house at that time, was later caught by Mangalapuram police and was presently in their custody.
"Once we question him, then only we will know what exactly happened, when it happened, what is the mental condition of the grandson and whether he is addicted to any drugs," the officer said.
The bodies have been sent for post-mortem, he added.
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