Amravati chemist Umesh Kolhe is surrounded by his killers and assaulted in CCTV footage that emerged weeks after the killing.
Grainy footage from June 21 shows Umesh Kolhe suddenly collapsing after being attacked.
Umesh Kolhe had his throat cut by two men on a motorbike on his way back from his doctor’s office.
The first attempt to kill Amravati chemist Umesh Kolhe was made the previous day.
Mr. Kolhe was spared that day because he closed early — around 9:30 p.m.
The killers, who spotted the store earlier, had expected him to close his shop by 10 p.m. to 10:30 p.m., sources say.
Mr Kolhe was allegedly killed for his support for former BJP spokesman Nupur Sharma, whose comments on the Prophet Mohammed sparked outrage in India and abroad.
The chemist was part of a WhatsApp group called Black Freedom, which has both Hindu and Muslim members.
Mr Kolhe reportedly made some religious comments in support of Nupur Sharma on WhatsApp chat. The post was shared to other WhatsApp groups by his friend and client Yousuf Khan, a veterinarian. One of these WhatsApp groups was Kalim Ibrahim.
Irfan Khan, a member of that group, was furious at the comments, police sources say. He planned the murder with five other members, police say.
Yousuf Khan, who runs an NGO called Rehbar to help Muslim families, even visited Mr Kolhe’s family during his funeral.
Irfan Khan and Yousuf Khan are among the seven men arrested for killing Mr Kolhe.
The country’s top counterterrorism agency, the National Investigation Agency, has taken over the case, which took place a week before the Udaipur killing.
Nupur Sharma was suspended by the BJP last month over comments about the Prophet Mohammed that sparked nationwide protests and global condemnation.