Deputy Chief Paulo Da Silva has been announced as the new chief of York Regional Police. Da Silva, a 29-year veteran with the force, is to begin his new role June 27. He takes over from Chief Jim MacSween who retires June 26, York police said in a news release Thursday. York police Chief Jim MacSween retires on June 26. MacSween announced his retirement in February, weeks after revealing the results of Project South, a bombshell investigation into corruption within the Toronto police.