"Today, Bihar lives under the shadow of loot, gunfire, and murder. Crime has become the new normal, and the government has completely failed," he tweeted.
The Congress MP further appealed to the people of Bihar, urging them not to vote for a government "that cannot protect your children" in the upcoming Assembly elections.
"Every murder, every robbery, every bullet is a cry for change. The time has come for a new Bihar - one of progress, not fear. This time, your vote isn't just to change the government - it's to save Bihar," he further wrote on his X handle.
Owner of the Magadh Hospital, Gopal Khemka, at 11:40 pm on Friday in the plush Gandhi Maidan area of the capital, six years after his son, Gunjan, who was a BJP leader as well, was killed in broad daylight in a similar fashion.
The incident, which was caught on CCTV, has stirred a political row with only a few months left for the state assembly elections, as RJD chief Tejashwi Yadav claimed that the police took two hours to reach the crime scene.
"It's a horrible incident. The businessmen want to leave Bihar. The incident occurred in the heart of Patna... Still, it takes the police two hours to arrive here," he told news agency ANI.
"Six years ago, his (Gopal Khemka's) son was murdered, and none of the murderers were caught... By the time transfers and postings are done through bribery and performers are not posted, things will not improve. No one is safe in Bihar... The CM is unconscious and he is tired, officers are running the government," he added.