As per reports, in his sixteen-month service as the head of the police force of Banka, he took stringent measures to reduce the level of crime in the district.

[12] As city SP of Banka, Kushwaha took various measures to control crime; he prepared a list of some of the top criminals, who were wanted in many offences.

[1] In 2017, while he was serving as SP of Patna, he took the charge of operation which was launched in order to save forty people from drowning in river Ganga.

[13] He also motivated his subordinate police officials to keep a tab on all the incidents which were happening around them, when he was serving as SP of Banka, in order to consistently vigil the situation for tackling of crime.

After airing of a sting operation conducted by a news channel, which revealed the connivance between some of the police officers and Sand Mafias of the region, he suspended some of the tainted officials and sent recommendation to higher authorities to release one of them from service.

When some of the junior doctors of PMCH intervened to protect the victim, a mob of students from Iqbal hostel arrived there later and threw a bomb on hospital's staff zone.

In the same year, when Kushwaha was serving as Deputy Commissioner of Police, an arrest notice was also issued against Rashtriya Janata Dal Member of Legislative Assembly, Surendra Yadav in a case of extortion.

[22] Kushwaha was also one of the member of Special Investigation Team, which was probing "Bihar's Topper Scam", in which the accused named Bachha Rai was found guilty of taking money for enhancement of marks in Higher Secondary level school examination of the state education board.

[23][24] In 2015, Pappu Yadav, a former legislator from Purnia called a bandh (strike) over alleged beating and death of a student named Siku Raj by Border Security Force personnels and state police officials.

The Jan Adhikar Party workers turned violent at many places and Yadav himself led a mob of over hundred people accompanied by former union minister Nagmani to surround Dak Bangla Square in Patna.

In order to control the angry mob Kushwaha detained Yadav and Nagmani along with their supporters for twenty four hours until the situation became normal.

[36] Subsequently, Kushwaha and District Development Officer Giridhar Dyal released the CCTV footage of the incident, in a bid to help National Investigation Agency study the case.