The deal, which would see Google supplying some of the adverts that appear with Yahoo’s search results, has come in for from industry players like and media firms.
Google had originally said that it would allow 100 days for regulators to investigate the deal and it would go ahead later this month. However it has now said it will delay for an unspecified period, thought to be about a month.
“The companies have agreed to a brief delay in implementing this agreement to continue our ongoing discussions with the (U.S.) Department of Justice,” Yahoo said in a statement.
“We have had discussions with regulators and look forward to responding to their questions about this agreement.”