Oct 22 (Reuters) - Advertising group Interpublic

missed Wall Street expectations for third-quarter revenue on

Tuesday, hit by the continued slump in ad spending across major

markets like the United States.

Shares of the New York-based company fell over 3% in

premarket trading.

Interpublic's results fan fears that the slump in the ad

market will persist as marketers withhold spending on projects

due to high interest rates and economic uncertainty.

The results contrast with those of peer Omnicom ( OMC ),

which reported strong quarterly profit and revenue last week,

driven by strength in its advertising business.

Interpublic said in July that its clients in certain

businesses are taking longer to make decisions over

macroeconomic concerns.

Interpublic - which also owns McCann, Mediabrands and

MullenLowe - reported revenue of $2.24 billion for the quarter

ended Sept. 30, falling short of estimates of $2.30 billion, as

per data compiled by LSEG.

The company reaffirmed its target of achieving organic

growth of 1% for the year, after tightening its forecast in

July.

Revenue growth in the United States as well as international

markets was flat organically, with Asia Pacific falling over 7%

in the quarter and Latin America reporting a rise of around 10%.

Adjusted earnings per share of 70 cents in the reported

quarter came in line with analysts expectations.