With the arrest of the three, police claimed to have busted the infamous 'Bournvita Gang'.
Patna City SP Shivdeep Lande said the three caught today were minors and students of Class 10.
They weare being questioned about their crimes, as well as, other accomplices, who would be nabbed once the police traces their locations, he said.
One motorcycle belonging to them (the gang) has been seized, while rest of the gang members managed to escape.
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He said that handwriting of one of the nabbed boys has matched with the handwriting in the threat letter sent to the girl.
"This is a very bad trend emerging here. All the three boys hail from good families. Since they all are minors, they will be forwarded to remand home. Their parents have been informed by the police," Lande said.
The gang members all teenagers would zoom around on costly motorcycles, snatching valuables from people and indulging in eve-teasing and hooliganism.