Haryana ADGP Law and Order Mohammed Akil today visited the crime spot and held confabulations with the members of the SIT and other senior police officers.
He said police had got "vital clues" in the case and the culprits will soon be arrested.
Saying that the woman went out of her house alone and fell into the wrong hands who committed the "brutal crime", he disclosed without divulging the details that "we have got vital clues and soon we will arrest the culprits".
They also staged a dharna on the road in front of Bapu park in the city.
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A 28-year-old mentally-challenged woman from Nepal was brutally raped and murdered and her body dumped in a field at a village on the Rohtak-Hisar highway here.
The deceased had been residing with her sister for the past three months and was undergoing treatment at the Post Graduate Institute of Medical Sciences (PGIMS) here.
The victim's sister had lodged a complaint with police on February 1 and on February 4, the woman's body was recovered from the fields in Akbarpur village with several injury marks on it, Rohtak Superintendent of Police Shashank Anand had said.