Cow vigilantes kill Christian man and injured three others when they were skinning a dead ox.
The incident happened in the eastern state of Jharkhand.
Indian police said a mob attacked the christen men when they were skinning a dead ox, in the latest case of so-called cow lynching.
According to Human Rights Watch, 44 people were killed in cow-related violence between May 2015 and December last year by Hindu vigilantes.
Opponents of Prime Minister Narendra Modi say that such groups have become emboldened since his Hindu nationalist Bharatiya Janata Party (BJP) swept to power in 2014.
The latest incident happened in the eastern state of Jharkhand late on Thursday when men from a local Christian community were skinning the carcass of an ox in a field.
“The men were armed with iron rods and sticks and attacked the group of skinners brutally,” said M L Meena, a senior Jharkhand police official.
The three men injured in the attack were sent to the hospital. Two men have been arrested for alleged murder and five more were on the run, Meena said.
Meena said the charges were based on a complaint by a Hindu villager who said he witnessed the slaughter of the ox.
“So far the investigation has shown the ox died naturally. We are doing a thorough probe,” he said.
Modi, who is running for a second term in elections that began on Thursday and run until May 19, has condemned cow-related violence.
Under his government, laws about cow slaughter are now applied more strictly and punishments have increased.