STOCKHOLM  One man was killed and two other people were injured when two explosions hit the heart of Stockholm’s city-center shopping district on Saturday evening, the police in the Swedish capital said. The country’s foreign minister called the blasts a terrorist attack, and an e-mail to news organizations minutes before the blasts seemed to link them to anger over anti-Islamic cartoons and the war in Afghanistan.

The police said that a car parked near the busy shopping street of Drottninggatan exploded first, shortly before 5 p.m. Stockholm time, and that the wreckage of the vehicle included gas canisters. A second blast followed minutes later, and about 200 yards from the first. A man’s body, with blast injuries to his abdomen, was discovered after the second explosion.

Swedish newspapers portrayed the dead man as a suicide bomber, and the newspaper Aftonbladet said on its Web site that he had been carrying pipe bombs and a backpack full of nails. But the police declined to confirm this. “We are in the middle of a technical investigation, and we are working methodically to find out what happened,” said a police spokeswoman, Petra Sjolander, who refused to speculate about whether the blasts were a terrorist attack.

Still, comments from Foreign Minister Carl Bildt on his Twitter account did not attempt to hedge the issue. His post read: “Most worrying attempt at terrorist attack in crowded part of central Stockholm. Failed  but could have been truly catastrophic...”