Four more states join US monopoly lawsuit against Apple

FILE PHOTO: The Apple logo is shown atop an Apple store at a shopping mall in La Jolla, California, U.S., December 17, 2019, 2019. REUTERS/Mike Blake/File Photo

WASHINGTON (Reuters) -Four more U.S. states on Tuesday joined the Justice Department's lawsuit against Apple Inc alleging the iPhone maker is monopolizing smartphone markets, the department said in a statement.

The four states are Indiana, Massachusetts, Nevada and Washington, the Justice Department said. The original lawsuit was filed in March, and 15 states and the District of Columbia joined the lawsuit at the time.