US based marketing communications and services company Interpublic Group (IPG) has reported an 8.5 per cent organic revenue growth in the second quarter.

The company, which owns agency networks including Lowe and McCann Erickson, said the 10 per cent growth in revenue to $1.62bn during the quarter was largely driven by huge revenue increases from the US and developing markets.

IPG reported a 4.7 per cent year-on-year increase in revenues from operations outside the US to $657m. The group's operating income rose to $117.8m in the first half from just $15m a year earlier.

Michael Roth, chief executive of IPG, said they are pleased with the second quarter's strong performance in terms of both growth and profitability, adding that they are confident of reaching an operating margin of 8 per cent for 2010.

However, he said they would continue to run their businesses conservatively as there are still certain areas of uncertainty in the global economy.