The Uttar Pradesh Police arrested four people late on Tuesday night for the attack on Bharatiya Janata Party (BJP) leader Brijpal Tevatia.
However, according to the police, the main accused is still on the run and a massive hunt is on to nab him.
The BJP leader sustained severe injuries last week after a gang of unindentified assailants opened fired at his SUV in Rawli Road when he was coming from Murad Nagar to Ghaziabad.
According to reports, Tevatia sustained about five gunshot wounds after his car was attacked at around 8 pm.
The police recovered AK 47, two pistols, one rifle and a large cache of ammunition used in the attack on the BJP leader.
Tevatia was travelling with five others, including his bodyguards. All of them sustained bullet injuries.
Tevatia is said to be a confidante of Union Home Minister Rajnath Singh, who has purportedly inquired about the incident from officials of the UP Police.
--ANI