In a curious political development, senior Rashtriya Janata Dal (RJD) lawmaker and former health minister Tej Pratap Yadav on Tuesday put up a “No Entry” notice for Bihar chief minister Nitish Kumar in the Grand Alliance outside his parents’ official residence in Patna. Tej Pratap is the elder son of ailing RJD president Lalu Prasad who is currently recuperating in a Mumbai hospital for his multiple ailments.

The printed notice pasted on the wall of his mother Rabri Devi’s residence says, “No Entry, Nitish Chacha”. The four-word message is enough to explain the kind of bitter political rivalry prevailing between the two parties, the RJD led by Prasad and the Janata Dal-United ( JDU) headed by Kumar.

Amid media glare, the Tej Pratap came out from his residence on Tuesday and waved the poster before pasting on his home’s wall.

This comes barely two days after Prasad’s elder son had announced to block the entry of the chief minister in the Grand Alliance.

“When I can’t allow his entry into my residence, how is it possible for him (Kumar) to get place in the Mahagathbandhan (Grand Alliance)?” he asked. His younger brother Tejashwi Yadav who served as the deputy chief minister in the previous Grand Alliance government has already announced that the door of the Grand Alliance is shut for Kumar.

The surfacing of “No Entry” poster assumes much political significance amid reports that the Congress leadership has gone extra miles to woo Kumar and induct him in the Grand Alliance in the event of the latter quitting the NDA. Of late, a number of Congress leaders have openly spoken in favour of Kumar, drawing strong protests from the RJD. An angry RJD has dropped ample indications that it could quit the Grand Alliance and go it alone in the next LS polls if the Congress decided to align with the JDU.

Kumar who returned to power in November 2015 after winning the state elections with the help of the RJD and the Congress had quit the grand alliance in last year. Within hours of quitting Grand Alliance, however, Kumar returned to the archrival BJP camp and formed government with its support