Two explosions in central Stockholm killed one person and injured two on Saturday, causing panic among Christmas shoppers.

Police spokeswoman Petra Sjolander said a car exploded near Drottninggatan, a busy shopping street in the center of the city. Shortly afterward, a second explosion was heard higher up on the same street, and a man was found injured on the ground.He was later pronounced dead.

Two other people were taken to the hospital with lighter injuries, but it was not immediately clear in which explosion they were hurt.Rescue services spokesman Roger Sverndal said the car that exploded contained gas canisters.

Sjolander said it was unclear what caused the second explosion and if the two blasts were linked, but said a police bomb squad has been sent to the site.