A massive search operation was in place and all police stations in Tripura are on alert.
Three convicts, all serving life-imprisonment since 2012, escaped from the Central Jail in Tripura, police said on Saturday.
"The three convicts - Milan Debbarma, 28; Swarna Kumar Tripura, 22; Rabindra Tripura, 24 - fled from the jail in Bishalgarh on Friday night. They were found missing during the routine roll-call," Sepahijala district police chief Sudipta Das said.
He said that a massive search operation was in place and all of the state's 74 police stations were alerted.
"BSF (Border Security Force) were also asked to keep a close watch on the borders to prevent the convicts from crossing over to Bangladesh," Mr Das added.