04/22/2015 11:40 EDT | Updated 06/22/2015 01:12 EDT

Top Senate finance official testifies at trial of Sen. Mike Duffy

OTTAWA - After a week of reviewing Sen. Mike Duffy's office contracts, Crown attorneys have called in the Senate's top finance official to go over spending rules.Nicole Proulx was the Senate's finance director up until January, when she became the chief corporate services officer.Proulx was also the figure who told a key Senate committee in the spring of 2013 that Duffy's travel expense claims showed a troubling pattern.Duffy is facing 31 charges including fraud, breach of trust and bribery, and several of the counts deal with travel claims and office spending.The court has already heard from two other witnesses about Senate residency and contracting rules, but Proulx's perspective covers all of the rules governing the use of Senate resources.Duffy's lawyer has argued that his client operated within the rules as they existed, and has committed no crime.