Canada's Competition Bureau is suing Alphabet's Google over alleged anti-competitive conduct in online advertising, the antitrust watchdog said on Thursday.

Canada's antitrust watchdog is suing Google to force the breakup of the company’s ad tech unit. In a statement published Thursday, during the US Thanksgiving holiday, the Competition Bureau said a “thorough” investigation had found that Google had abused its dominant position in programmatic web advertising to “maintain and entrench its market power.

The Competition Bureau is suing Google over alleged anticompetitive conduct in the tech giant’s online advertising business and wants the company to sell off two of its services and pay a penalty.