BILLINGS - Law enforcement is continuing to investigate after a 10-year-old boy was attacked and slashed with a machete in Poplar in northern Montana.Watch the video below: Boy recovering following machete attack in PoplarThe boys family tells MTN News that three juveniles have been arrested after the attack Monday night, sending him to a local hospital in Poplar then to St. Vincent Regional Hospital in Billings."She was crying and said (the boy…