An LLRU spokesperson said, "We have received seven samples from the Mewat administration and after tests we found the samples positive. Reports of the samples have been sent to the concerned department and to the government."

Superintendent of police (SP) Mewat, Kuldeep Singh, refused to comment on the matter, saying he had not received any test reports so far. "I will be able to comment on the issue after I receive the lab reports from LLRU," Singh said.

Selling, slaughtering, and consumption of beef in any form is banned in Haryana and is a punishable offence.

The authorities had received complaints that that shopkeepers and vendors in Ferozpur Jhirka, located in a village in Muslim-dominant Mewat district are adding beef to biryani.

Meanwhile, after the complaint, police and cow vigilantes in Mundaka village here are keeping close vigil to avoid any such incident in view of Eid to be celebrated next week.

Deputy director of Mewat animal husbandry department, Narender Kumar, said that more samples would be collected if such complaints were received. Bharti Arora, Cow Protection Task Force's nodal officer and the deputy inspector general of police, said they are yet to receive the report on the seven samples taken from Mundaka.

Arora held a meeting with Mewat superintendent of police Kuldeep Singh and chairperson of Haryana Gau Seva Aayog Bhani Ram Mangla at Nuh on Tuesday and directed officials to be on their toes in the wake of complaints about the usage of beef in biryani.

The police's Cow Protection Task Force (CPTF) has spruced up its network of informers in areas where beef consumption is suspected to be high, official sources said. Meanwhile, Haryana Congress vice-president Aftab Ahmed said the measures were a "humiliation to the minority community and the particular area".