LUCKNOW, Dec. 3 -- A day after Aliganj's Rekha Verma, 37, was discovered "sitting dead" in Gomti Nagar's Vishal Khand-2, her death continued to remain a mystery as the post-mortem report offered no clear cause, police officials said on Tuesday.

They, however, hinted at poisoning, possibly through some medicine or narcotic substance. Also, police have registered a case of murder under section 103(1) of the BNS. The FIR was lodged at the Gomti Nagar police station following a written complaint from Verma's family.

The police refused to officially comment much on the post-mortem's findings. Gomti Nagar station house officer Brijesh Chandra Tiwari, however, said: "The exact cause of death could not be ascertained. The viscera and heart have...