German intelligence officials say they have received 100 tips about ISIS fighters inflitrating the country as refugees. The news comes after 3 people were arrested after a terrorist plot was uncovered targeting Berlin.

One of those arrested was a refugee who said he was from Syria, but is actually wanted on terrorism charges in Algeria.

Reuters:

Germany's domestic intelligence agency (BfV) has received more than 100 tip-offs that there are Islamic State fighters among the refugees currently staying in Germany, Berliner Zeitung newspaper cited the agency's chief as saying.

The newspaper said on Friday, without citing its sources, that BfV chief Hans-Georg Maassen had recently mentioned this number at a discussion in the Interior Ministry with politicians who focus on domestic policy issues.

But Maassen also said that among those tip-offs there were some cases of untruthful defamation, the newspaper said.

Meanwhile, the foiled terror plot involved targeting Berlin landmarks and tourist attractions. If that sounds like a repeat of the Paris attacks, you'd be right. The same Islamic State planners who carried out the Paris attack apparently planned the Berlin attack as well.

Reuters:

Security agencies have been monitoring the suspects since January, Funke Media Group said. The men behaved conspiratorially, changed their mobile phones multiple times and communicated via instant messaging services, it added.

The Tagesspiegel newspaper, citing security sources, said leading members of Islamic State (IS), who were responsible for the Paris attacks that killed 130 people in November, had given the order for an attack in Germany.

Prosecutors declined to comment on the report.

Police seized computers, mobile telephones and sketches in the raids, Steltner said, adding "we haven't found the smoking gun".

A couple was arrested in North Rhine-Westphalia and another man was arrested in Berlin, Steltner said. All were detained on existing warrants related to other matters.

The man detained in North-Rhine Westphalia was arrested in a shelter for refugees and arrived a short while ago in Germany claiming to be from Syria, Steltner said.

He is wanted by Algerian authorities, who believe he is a member of Islamic State, said Steltner. He is suspected of having military training in Syria.

The status of the other men was unclear, but Redlich said the two Berlin-based suspects were not refugees.

"In Berlin, the two persons we are investigating are not refugees," Redlich added. "Both have jobs here and have been here a long time."

Germany, and the rest of Europe for that matter, better get used to this. Monthly -- perhaps weekly -- announcements of terror plots broken up with the arrest of jihadists. Does it matter that one of the plotters arrived mixed in with the refugees? You have to figure if one made it through, others are also out there waiting to be activated.

The mastermind of the Paris attack boasted that he entered France by pretending to be a refugee and infiltrated "dozens" if ISIS fighters with him. Given what's going on in Germany, that scenario is not implausible.