In a nearly four-hour-long drama at the Maurya Hotel here, the singer's first wife Ranjana Narayan, staged a sit-in outside room no 404, where Udit, his wife Deepa and son Aditya, were staying.
A police team dragged Ranjana away from her protest sit-in to make way for Udit and his family to proceed to Patna airport.
Ranjana fell on the ground when she was forcibly moved by police, sustaining injuries to her leg.
Udit, who had come to the Bihar capital to attend a marriage, refused to speak to newspersons.
Ranjana, who said she had married Udit Narayan in 1984 in an arranged match, kept the singer and his family inside their hotel room from morning till 2 p.m. with her dharna.
She claimed her family had helped Udit in his days of struggle in Mumbai.
"He became a star only after the songs of 'Qayamat Se Qayamat Tak' became a hit in 1988 and fetched him the Filmfare award," Ranjana said.
She said she was his "real and legal wife" and Deepa was not legally wedded. Ranjana asked how Udit could marry another woman without divorcing her.
"I am his legal wife, my marriage was solemnised as per Hindu rituals."
She said she came to know about her husband's relations with Deepa four or five years ago. But said Udit had always told her that she was his real wife.
Ranjana said she would file a police complaint against Udit Narayan and move court for deserting her and living with another woman.
"First, I will meet Chief Minister Nitish Kumar in a day or two to apprise him about my case and request him to help me get justice," she said.
Ranjana admitted that she had not filed a police complaint against her husband till date as she was hopeful that he would not disown her.
Deepa, when asked by media persons about the allegations of the former wife, got irritated. Her private security guards and a few relatives shouted at the media persons and even attacked them.
Agitated media persons sat on dharna at the airport demanding action against the brother and security guards of Deepa.