The incident took place after the train crossed Meeranpur Katra Railway Station this morning and hit two trucks, one car and one motorcycle at the open crossing
Hundreds of people are expected to gather in Shahjahanpur as preparations have begun for the 'juta maar' Holi on March 29.
As per the police sources, initial rounds of interrogation have revealed that the deceased had a verbal duel over some issue with his friends who are now in police custody.
The arrests were made days after the girl was found with severe burns along a national highway in the district on February 22.
Two of the girls are aged 15 and one is 10, Superintendent of Police S Anand said, adding that three teams have been formed to work the case.
The police claimed that the accused had admitted that he lured the girls to the fields with a packet of biscuits and tried to rape them.
Police sources said a few suspects have been taken into custody for questioning and they were "very close" to cracking the case.
Police here had booked five people on Sunday for allegedly trying to unlawfully convert people to Christianity.
Farmers have been on a dharna at the site, blocking the road for several days in protest over the three new agri-marketing laws enacted at the Centre.
On Friday, Rajya Sabha MP, Bhupendra Yadav , did an open meeting with farmers on Kishangarhbas Road in Khairthal.
ADG, Bareilly Avinash Chandra has ordered an inquiry on the complaint of the woman, who met him on Wednesday.
"We never wanted these laws in the first place, they have only compounded our troubles," says Singh, who has come from Shahjahanpur.
The former Union minister was arrested by the SIT on Friday and sent to 14 days' judicial custody.