NEW YORK, Oct 8 (Reuters) - The U.S. said in a court

filing on Tuesday it was considering asking a judge to force

Alphabet's Google to divest parts of its business that

helped the Big Tech firm maintain an illegal monopoly in online

search.

Prosecutors said such actions are among the potential

remedies that it may propose in the landmark case that has the

potential to reshape how Americans find information on the

internet after a judge found Google, which processes 90% of U.S.

internet searches, had built an illegal monopoly.

The Justice Department is expected to file a more detailed

proposal with the court by Nov. 20. Google will have a chance to

propose its own remedies by Dec. 20.

U.S. District Judge Amit Mehta's ruling in Washington was a

major win for antitrust enforcers who have brought an ambitious

set of cases against Big Tech companies over the past four

years.

Google has said it plans to appeal, and that its search

engine has won users through its quality. Google said it faces

robust competition from Amazon ( AMZN ) and other sites where

users go directly to search for goods or services, and that

users can choose other search engines as their default.

Some companies that compete with Google have called for a

breakup.

Reviews site Yelp, which sued Google over search in

August, says spinning off Google's Chrome browser and AI

services should be on the table. Yelp also wants Google to be

prohibited from giving preference to its own local business

pages, which compete with Yelp, in search results.

Adam Epstein, president and co-CEO of search ad company

adMarketplace, said the threat of ordering Google to sell off

parts of its business could be used as a way to enforce less

drastic remedies.

"Google is not going to have the incentive to comply unless

they have the Damocles' sword of divestiture hanging above

them," he said.

Rival search engine company DuckDuckGo has called for the

court to require Google to license its search results to

competitors who could then build and improve their own products.

Microsoft ( MSFT ), which operates rival search engine Bing,

and Apple ( AAPL ), which receives billions of dollars annually

from Google, declined to comment.