LUCKNOW, Sept. 26 -- The Uttar Pradesh Anti-Terrorism Squad (ATS) is re-evaluating the presence of Naxal "sympathisers" in Sonbhadra district -- earlier known for the menace -- following the recent arrest of a sub-zonal commander of the banned Maoist outfit Tritiya Sammelan Prastuti Committee (TSPC), Umesh Singh alias Nagina alias Doctor.

Nagina, who carried a reward of Rs.5 lakh on his head, was nabbed from the UP-Jharkhand border in Sonbhadra on September 24. He has since been in ATS custody for eight days, during which security agencies have been grilling him to gather intelligence on TSPC's operations, links with other Maoist outfits, and possible hideouts of its cadres in Jharkhand and neighbouring states, officials said.

Senior AT...