Segunda Marquetalia is the second-biggest of two main groups that broke away from the FARC guerilla army after it signed a historic peace deal

One of Colombia's biggest left-wing guerrilla groups says peace talks are "blocked" over the government's failure to cancel warrants for the arrest of its leaders.

"The process is blocked, it's not moving forward," Walter Mendoza, chief negotiator for the FARC dissident group Segunda Marquetalia told AFP in an exclusive interview in a coca-growing region in the southwestern Narino department.