Student protesters demanding a single test for teachers’ recruitment in Bihar clashed with police on Tuesday after breaking through barricades while marching towards the governor and chief minister Samrat Choudhary’s residences in Patna.Police personnel use a water cannon on protestors as they raise slogans during a Mukhyamantri Gherao march over education and employment issues, organised by the Chhatra Yuva Sangharsh Morcha, in Patna, Bihar on Tuesday. (Pappi Sharma/ANI)The protesting students — mostly aspirants for Teachers’ Recruitment Exams to be conducted by Bihar Public Service Commission (BPSC) next month — under the banner of leftist Students’ Federation of India (SFI) and Democratic Youth Federation of India (DYFI) planned to picket Choudhary’s residence after marching from iconic Gandhi Maidan. Several protesters were detained when the marchers reached Dak Bungalow crossing.The student organisations have been opposing the BPSC’s move to fill 33,000 teacher posts following a preliminary and main examination.Also Read | Students, cops face off in Patna during march to Raj Bhavan over Bihar civil services examTight security arrangements were in place from Gandhi Maidan to the CM’s residence, with the authorities deploying anti-riot Rapid Action Force and CRPF along with the state police in central Patna ahead of the march.Police used water cannons to disperse the protesters at JP Golambar at Gandhi Maidan. Police said they used force when protesters broke barricades and allegedly threw stones. Deputy superintendent of police Kamakhya Narayan Singh was among the policemen injured.The protesters also scuffled with CRPF personnel at Dak Bungalow roundabout. One student suffered head injuries, and another fell unconscious.“We repeatedly urged the crowd to maintain peace. We told them that we will help them send a delegation to authorities concerned to register their demands,” Patna SSP Kartikeya Sharma told reporters. “Water cannons were used when the situation became tense.”Also Read | ‘Kutte bhonke hazaar’: BPSC official's remark sparks backlash amid student protests in BiharThe march was organised on the day the chief minister launched a Vidhyarthi Sahyog Shivir (Student Support Camp) for redressing complaints in educational institutions, and for feedback to improve the facilities. The camps will be organised monthly on the fourth Tuesday in educational institutions. Students can file their complaints and suggestions to officials for fast disposal of the grievances.“Every student’s voice heard, every problem resolved—this is the resolve, this is the effort,” the CM said in a social media post.Another stir turns violentMeanwhile, hundreds of nursing students who have been protesting outside Bihar Health Sciences University (BHSU) in Patna against alleged irregularities in the examination results clashed with police on Tuesday, leaving several students and two policemen injured. Four protestors were detained on the charges of ransack and attack on police team.Also Read | 25km, 10 hours and 200 students: Protest in Madhya Pradesh after teachers' alleged use of 'casteist' remarksProtesters alleged that police used baton charge when they arrived university campus with their demands over suspected irregularities in the results.