By Devin Stevens A 15-year-old facing charges over threats to schools in Nova Scotia and Manitoba will remain in custody for at least another month. The teenager from Bridgewater, N.S., and a 14-year-old from Rivers, Man., were arrested last week with police alleging the two accused had talked online about simultaneously attacking schools in both provinces. Their arrest comes a few weeks after the mass shooting in Tumbler Ridge, B.C., where on Feb. 10, an 18-year-old girl shot and killed her mother and half-brother at home before gunning down five students and a teacher’s aide at a school. But while police allege the pair from Nova Scotia and Manitoba began talking online at the end of February, investigators say there’s no indication their alleged plans were spurred by the Tumbler…








