A Canadian regulator has asked for opinion from the public on Rogers Communications’ planned C$20 billion ($16 billion) purchase of Shaw Communications to check for competition concerns.

The deal announced in March to create Canada’s second-largest cellular and cable operator has attracted regulatory scrutiny.

The Competition Bureau said in August it obtained court orders to advance its review.

The regulator on Tuesday asked market participants and Canadians to come forth with information that could assist the regulator’s probe on whether the deal will reduce or prevent competition.

The Competition Bureau said its review was ongoing and no conclusions have been made.