May 7, 2019 7:31 pm Principal Dancer at Boston Ballet Takes on New Role Boston Ballet’s Lia Cirio has reigned as a principal dancer for close to a decade. Taking on a new challenge, Cirio is now a choreographer for the company. US & World Videos 3:05 100 protesters detained at Northeastern University 2:39 Community mourns police sergeant killed on duty 2:50 Community mourns Billerica police sergeant killed on duty 4:32 Anti-war protester at Northeastern speaks amid arrests: ‘We are peaceful students' 10:42 Multiple people arrested as police clear campus encampments