(CNN) -- Millions of BlackBerry users remained without service on Wednesday as a three-day outage continued.
The service outage started on Monday with customers in the Middle East, Europe and Africa -- before spreading to South America on Tuesday. On Wednesday morning, reports suggested it had spread to some BlackBerry users in North America.
"BlackBerry users in Canada have been cut off from their smartphone's messaging, e-mail and Internet services," the Canadian news site CP24 wrote. Those sentiments were echoed by the CBC, the Canadian broadcaster, which put out a breaking news tweet saying e-mail and texting services had been interrupted in some parts of Canada.
NPR reported some of its staffers in North America had experienced outages. CNN employees in the United States also were having trouble accessing some data connections and text messages.
Research in Motion, the maker of BlackBerry smartphones, did not respond to CNN's request for comment on Wednesday morning. The company has not acknowledged outages in North America.