US embassy in Stockholm threatened

The US embassy in Stockholm, Sweden, has stepped up security after receiving an unspecified threat.

The embassy said in a notice to American citizens in Sweden that it decided to boost its security posture because of the threat, a suicide bombing last week and an increased threat level in the country.

Last week, a suicide bomber killed himself and injured two people when some of the bombs he was wearing exploded among panicked Christmas shoppers in central Stockholm.