Canada has expressed concern to China after Beijing reportedly shot down a satellite for the first time, the foreign ministry said on Friday.
"Canada has expressed its strong concerns to the Chinese authorities over the reported anti-satellite test and the possible negative effects," a ministry spokesman said without elaborating.
Washington said China had fired a missile to destroy an orbiting weather satellite last week, making it only the third country after the former Soviet Union and the United States to shoot down an object in space.
If the test, which according to US magazine Aviation Week and Space Technology took place on January 11, is confirmed, China could now theoretically shoot down spy satellites operated by other nations.
On Friday, Washington voiced concern the test may also have scattered debris in space that could endanger the manned International Space Station or orbiting satellites.
China declined to confirm the incident on Friday but foreign ministry spokesman Liu Jianchao told journalists "there's no need to feel threatened about this," adding that China was "not going to get into any arms race in space."