She is known primarily for her actions against Bihar politician, Anant Kumar Singh, who was wanted by police in several criminal cases, including murder and possession of harmful weapons.
[3][4][5] Singh is married to Indian Administrative Service officer, Suharsha Bhagat, a resident of Samastipur district of Bihar.
[9] As per media reports, she is considered close to many leaders of Janata Dal (United), and time and again, controversy has erupted over her alleged ties with politicians of ruling party of state of Bihar, the JD(U).
As per reports, when she was ASP of Barh, she had used the personal vehicle of a Janata Dal United leader to bring Anant Kumar Singh back from Saket Court, Delhi.
However, on the complaint of Neelam Devi, who was running in the elections of 2019 against JD(U) nominee Lalan Singh, she was sent on deputation to Anti Terrorist Squad.
For her action against criminal politicians, she was compared with another women IPS officer of Bihar cadre, Shobha Ahotkar, who was known for her role in liquidating criminal-politician nexus.
[13][14] She again came into the limelight in 2020, when during the procession of Durga Puja idol immersion in river, violence broke out in Munger district, where she was serving as Superintendent of Police.
[15][16] After the incident, District Magistrate of Munger and Singh, serving in capacity of SP, were removed from their position by Election Commission of India.
[17] In January 2021, after the situation calmed, Lipi Singh was appointed by Government of Bihar as Superintendent of Police for Saharsa district.
Since, this reshuffle took place after the rebellion of her father RCP Singh against JD(U) and Nitish Kumar, it was reported widely by state media.