Jan 24 (Reuters) - The following are the top stories in the Wall Street Journal. Reuters has not verified these stories and does not vouch for their accuracy.

- Canada warned Amazon AMZN.O that the federal government is reviewing its business ties with the company's cloud-computing unit following Amazon's decision to shut down its warehouses in Quebec, leading to layoffs of 1,700 workers.

- Britain's Competition and Markets Authority is investigating mobile ecosystems controlled by Apple AAPL.O and Alphabet's GOOGL.O Google to work out if they need to obey a strict new law governing digital competition.

- CNN is laying off roughly 200 employees, or about 6% of its workforce, part of a plan Chief Executive Mark Thompson says will shift the cable TV brand's emphasis toward digital growth and prepare it to launch a streaming service.

- Garden Investments, a new firm started by one of Trian Fund Management's co-founders, has built an activist position in kitchen-equipment maker Middleby MIDD.O and plans to push for changes that could boost the sluggish stock.

- The acting chairman of the Commodity Futures Trading Commission (CFTC) has appointed former prosecutor Brian Young to lead its enforcement division on an interim basis during the early period of the U.S. President Donald Trump's administration.

(Compiled by Bengaluru newsroom)

((globalnewsmonitoring@thomsonreuters.com))