The family of the man, a blacksmith, denied the accusation that they secretly ate beef, which is banned in many Indian states including Uttar Pradesh, which is ruled by a Hindu priest from the BJP.
Inspector Subodh Kumar Singh was allegedly killed after a mob surrounded his team in Bulandshahr over the recovery of five carcasses in a nearby forest. The driver, Ram Asrey, drove as fast as he could.
Most of the male members have left the village as police continue to raid houses looking for accused named in the FIR.
Hindu vigilantes often roam the roads in northern India to protect cows, frequently resulting in assaults against India's Muslim population - some 14 percent of the country's 1.3 billion people. "Why did the police not take action against those who had illegally gathered and were slaughtering a cow?" said Vinod Bansal, spokesperson of the VHP.
So-called cow vigilantism has been on the rise and has led to several killings in the past few years.
The issue has sparked violence before, but an attack on police is unheard of.
The chief minister was already facing flak from the opposition parties for attending a laser show in Gorakhpur when the violence broke out in Bulandshahr on Monday (December 3).
Police said there was firing by miscreants also during the clash.
"Villagers complained after they found a dead cow, and took to the streets to protest". Singh was the SHO of Syana police station. The statement demonstrates that the senior officers are clearly aware of the communal conspiracies that fuel such incidents but on which they are prevent from acting upon due to political pressure. Eyewitnesses told the BBC that, unlike some of the other policemen, Mr Singh was not wearing a bulletproof jacket and did not have his pistol in his hand. Police sources said a complaint has been filed by Sumit's father saying his son was a victim of the riot and not a perpetrator. An agitator was also killed in the violence after which the mob went on the rampage and indulged in arson and destruction at Chingrawati outpost. He says he locked himself in the school's bathroom.
On Monday, the villagers blocked a road, demanding the responsible be arrested for slaughtering cows, Kumar said. The mob left almost six policemen wounded, burned down a police station and set several vehicles on fire. As the officers scurried for cover, the men began to hurl stones and even bricks at them, Mr Asrey said in an interview on Monday. Before posting in Siana Police Station in Bulandhshar he had worked in Meerut, Saharanpur and Muzaffarnagar districts.
"That's when I realised Mr Singh had been hit by a brick and was lying unconscious", he says.
Chaudhary said her suspected attackers were arrested and three policemen suspended for dereliction of duties. "We had no choice but to get out and run".