Paladin Energy (OTCQX:PALAF) -5.3% in Wednesday's trading after Canada's federal government said it is extending a national security review of the company's acquisition of Fission Uranium (OTCQX:FCUUF), further delaying a deal that once was expected to close in September.

Paladin (OTCQX:PALAF) said it received a notice from Canada's industry ministry that the review period will be extended until December 30, while also warning that failure to obtain clearance would scuttle the acquisition.

Paladin's (OTCQX:PALAF) agreement to buy the Canadian company for C$1.14B in stock would create the third-largest publicly traded uranium producer, but the deal was delayed by opposition from Fission's (OTCQX:FCUUF) largest shareholder, China's CGN Mining Co.

Also, Prime Minister Trudeau's government has increased scrutiny on critical minerals deals involving foreign buyers.