The Chicago Firemen's Annuity & Benefit Fund will discuss its relationship with international equity manager INVESCO Global at an investment committee meeting Dec. 15, said Michael Moran, comptroller. INVESCO runs a $25 million international core portfolio for the $1 billion plan, Mr. Moran said. The meeting follows the filing of market-timing lawsuits against the firm's sister business, INVESCO Funds Group, he said. He would not speculate on the outcome of the meeting. Mercer Investment Consulting will assist. Bill Hensel, spokesman for INVESCO parent, AMVESCAP, declined to comment.