North Bay Police say a “hold and secure” was lifted from Algonquin and St. Joseph Scollard Hall schools say following a call for service at an apartment unit at the corner of Cedar and Morin St. shortly after 9 this morning. That incident then led police to search of a residence on Front St. at the corner of Morin St. Police say the two investigations are linked. Four people have been arrested but no charges have yet been announced.