Patna: The protest by the Staff Selection Commission (SSC) aspirants against the alleged exam paper leak for the combined graduate level examination has intensified with Madhepura MP and Jan Adhikar Party (JAP) president Pappu Yadav jumping in the fray in support of the candidates.

JAP members on Sunday resorted to a "rail roko" agitation, hampering train services. The members blocked tracks near Rajendra Nagar Terminal at Patna, and at Madhepura, Ara, Khagaria, Darbhanga and Barh.

The students have been protesting outside the Staff Selection Commission (SSC) office in New Delhi since February 27, seeking a Central Bureau of Investigation (CBI) probe into the alleged paper leak in the combined graduate-level (CGL) examination held from February 17 to 21.

At Rajendra Nagar, the agitation was led by JAP president Pappu who sat on the railway tracks disrupting train movement on the route. Four trains, including three express and one passenger, were affected from 9am to 10am. The agitators pelted stones on trains passing on the route.

Pappu claimed that he received a call from Union home minister Rajnath Singh when he was staging an agitation at Rajendra Nagar. He said: "The Union home minister assured me that he will take up the matter with Jitendra Singh, minister of state (independent charge) Prime Minister's Office (PMO), public grievances and pensions."

Pappu, who said he will raise the matter in Lok Sabha on Monday and file a case in the Supreme Court demanding a CBI probe, claimed the coaching mafia was behind the paper leak.

In Darbhanga, JAP workers stopped the Darbhanga-Delhi Bihar Sampark Kranti Express at Darbhanga railway station on Sunday.

In Ara, activists of the Inqlabi Navjawan Sabha took out a procession at Jagdishpur where they burnt the effigy of Prime Minister Narendra Modi and raised slogans against the government in support of students.