Police suspect that prolonged suffering due to the illness propelled to couple to kill themselves.
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An elderly couple died by suicide by drinking soft drink laced with pesiticide at a private lodge near Tirupati railway station on Sunday.
The deceased have been identified as 73-year-old Chinnabba Naidu and his wife T Rukmini (63).
They were residents of Vedagirivaripalli village in Irala mandal of Chittoor district.
Chinnabba Naidu was suffering from paralysis and was undergoing treatment since March 7 at the Sri Venkateswara Institute of Medical Sciences (SVIMS).
Police suspect that prolonged suffering due to the illness propelled to couple to kill themselves.
Further investigation is underway.
A case has been registered.
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