Kaithal superintendent of police (SP) Kuldeep Singh Yadav said four police teams had been constituted to investigate into the case and bring the culprits to book. The assailants were yet to be identified, he said.
Sources said no household articles were found missing and locks of almirahs and cupboards were found intact.
The murder has sent shockwaves in the town. The markets, which are generally found open at night, were closed early and streets wore a deserted look as people preferred to stay indoors.