DOJ wants more data on Google-Motorola

Google today acknowledged receiving a so-called "second request" from the Justice Department for information as it considers the search giant's plans to buy Motorola Mobility for $12.5 billion.

Google made the disclosure in a blog post this afternoon, saying the request was for "more information" in order to continue the review.

"While this means we won't be closing right away, we're confident that the DOJ will conclude that the rapidly growing mobile ecosystem will remain highly competitive after this deal closes," Google Senior Vice President Dennis Woodside wrote in the post. "We'll be working closely and cooperatively with them as they continue their review."

The move is likely to prolong, and could potentially complicate, the review process.

Woodside dismissed the request as "pretty routine." And he pointed to a previous second request that Google received a year ago, shortly after it announced plans to acquire travel data provider ITA Software.

But while the Justice Department ultimately approved Google's acquisition of ITA, the agency compelled Google to agree to certain conduct. Regulators required Google to continue licensing ITA's travel technology to rivals for five years on "reasonable and nondiscriminatory" terms, and forward to the agency any complaints the company receives from travel competitors upset about where they land in Google's search rankings.

Moreover, second requests are perhaps less routine than Woodside suggests. According to The Wall Street Journal, about 4 percent of all deals last year received a second request from U.S. antitrust agencies.

In a regulatory filing, Motorola acknowledged receiving a second request as well.