Principal and District Sessions Judge CV Karthikeyan also sentenced Manikandan alias Rajesh to six months of imprisonment for trying to make it appear a suicide. Both the terms would run concurrently.
The judge also imposed a fine of Rs 5,000 and Rs 1,000 on the two counts (murder and giving false information) on the convict respectively.
Police said a quarrel with his mother led Manikandan to strangle her to death.
After the murder, he hung the body from a hook in the ceiling in an attempt to make it appear as if his mother had committed suicide and lodged a police complaint.
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