The attack comes days after Vikram Joshi, who works with a local daily, lodged a complaint at the local Vijay Nagar police post against some people for harassing his niece on July 16.
Joshi was returning home in Vijay Nagar area with his two daughters on a motorcycle when he was waylaid by over half a dozen armed men at around 10.30 pm on Monday, officials said.
The journalist was shot in the head by one of the accused, who then fled the spot, leaving him severely injured. He was taken to a hospital where he is in a critical condition, they said.
Senior Superintendent of Police, Ghaziabad, Kalanidhi Naithani said nine people, including two of the three named in the FIR, have been arrested while the local police post in-charge was suspended in the wake of the incident.
The FIR was registered under Indian Penal Code sections 307 (attempted murder), 506 (criminal intimidation) and 34 (act done by several people with a common intention) on complaint by Joshi's brother Aniket Joshi, Naithani said.
The FIR had three named suspects Chhotu, Akash Bihari and Ravi besides some unidentified people. Chhotu and Ravi have been arrested, while searches are underway to nab Akash and six police teams are working on the case, he added.
The police have also arrested Mohit, Dalbir, Akash, Yogendra, Abhishek, Abhishek and Shaqir based on evidence in connection with the case, Naithani added.