(Reuters) Belgian, French and German police interrogated dozens of Islamist suspects on Friday as much of Europe remained on heightened security alert after last week's killings in Paris and raids in Belgium in which two gunmen were killed.
In Paris there was a fresh scare when a gunman took several people hostage at a post office in a northwestern suburb. A siege ended when he gave himself up to police. No one was hurt. Authorities said they could not confirm whether the incident was related to terrorism.
Belgian police questioned 13 suspects and France held two people on Belgium's request, a day after two gunmen were killed during raids against an Islamist group that authorities said were planning to attack police.
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