Investigators say man who e-mailed threats confronted police with shotgun.

Authorities have arrested a Washington state man and swept his apartment complex for explosives after e-mailed threats were made against President Obama.

Federal Way Police identified the man as 31-year-old Anton Caluori.

A Secret Service agent and Federal Way Police went to the apartment at about 2 p.m. Tuesday after threatening e-mails were intercepted.

When they got to the front door, the agent and the police officer were greeted by a man armed with two guns.

There was a brief skirmish and Calouri was taken into custody.

Caluori made a statement about explosives, so the bomb squad was called in.

The apartment building was evacuated as a precaution while the bomb squad searched the apartment.

No explosives were found.

Emily Langlie, a spokeswoman for the Seattle U.S. attorney's office, said the threats had been sent to a general government email address.