Nielsen to buy TV and Web audience research firm

(Reuters) - Nielsen Co, a provider of market research and media services, said it agreed to acquire IAG Research Inc, a television and Internet audience research firm, for $225 million to strengthen its media business.

Nielsen plans to finance the transaction through the issuance of notes, existing facilities and cash on hand. It expects to complete the acquisition in the second quarter.

(Reporting by John Tilak in Bangalore; Editing by Amitha Rajan)