"They have met me and raised questions on certain issues. It will be taken care of during the probe," ADG (law and order) Daljeet Chowdhury said.
The family is of the view that the lab report, which confirmed beef, was not fair and had many "loopholes".
Akhlaq's son Sartaj, working with the Indian Air Force, said there were many loopholes in the recent forensic report of Mathura lab, after which the petition demanding legal action against the family was filed.
52-year-old Mohammad Akhlaq was beaten to death on September 28 last year in Bisahra village of Dadri by a mob following rumours that he and his family had stored and consumed beef at their house, triggering a fierce debate over "intolerance" in the country.
More From This Section
Residents of Bishada village in Dadri had met the Gautam Budh Nagar SSP on June 5, demanding an FIR against Akhlaq's family.
Judicial Magistrate Vijay Kumar ordered investigation and lodging of an FIR of cow slaughter against Akhlaq's family on July 14.
Beef eating is not a crime in UP but cow slaughter is a non-bailable offence which carries a punishment of up to seven years in jail.