Baljit Singh Sethi, advisor of the National Rifle Association of Indian (NRAI), was attacked at his office in south Delhi's Tughlaqabad industrial area by four miscreants on Monday morning.
According to the police, the incident took place at around 10.30am at Sethi's office.
Police have arrested one of the assailants, identified as Sunil Kumar Yadav, a resident of Mainpuri, UP after he was caught by some staff and friends of Sethi. The other assailants managed to escape from the spot.
"We have registered a case and arrested one assailant. Further investigation into the matter is on and efforts are being made to nab the absconding miscreants," said Ajay Chaudhary, ACP (southeast).
A senior member of NRAI, who did not want to be identified, said the assailants were hired by a suspended member of the NRAI who was removed from his post six months ago.
"A departmental probe against the suspended member stated that he had indulged in corruption and was misusing his funds. The member had developed a grudge against Sethi and some other senior NRAI members after his suspension," said the senior NRAI member.
On Monday, Sethi was sitting in his office when four men arrived and wished to meet him personally. One of them fired from a pistol at him, but it jammed and he survived.