The incident occurred last night as the MP was returning from a function at Avas Vikas colony, police added.
In her complaint, Niranjan Jyoti has said that while she was returning from the ceremony, one Bhanu Patel along with his three aides attacked her and opened fire.
The MP said that her gunman Rahul Tiwari sustained serious injuries in the scuffle with the attackers.
While the other attackers were chased away by locals, Bhanu Patel has been arrested by police.
Superintendent of Police Vinod Kumar Singh said that the attack was executed in a pre-planned manner over an old rivalry.
He added that raids were being conducted to nab the other attackers.