thank angela merkel german security service bfv reportedly receive 100 tip-offs isis militants infiltrate country among refugees accord recent report news come massive nationwide anti-terror raid take place week.the head german domestic intelligence service bfv hans-georg maassen tell gather politicians agency receive 100 warn indicate islamic state formerly isis/isil militants stay germany refugees newspaper berliner zeitung report friday without cite sources.however case baseless defamation among tip-offs maassen add accord newspaper.german security service remain high alert since november terror attack paris claim live 130 people.earlier week police security agents across germany scramble search suspect allegedly plan terror attack country berlin see likely target well-known tourist attractions include alexanderplatz train station cold war-era checkpoint charlie could among target possible attack accord preliminary media reports.on thursday police special force unit raid four flats two businesses berlin detain four men accuse allegedly tie islamic state suspect involve plan attack police spokesman martin redlich tell rt.german spy chief warn 1,000+ radical islamists ready attack https //t.co/vzn1xra2oa pic.twitter.com/blxxggxhkk rt rt_com december 13 2015one suspect 49-year-old algerian arrest three-bedroom flat berlin predominantly immigrant district kreuzberg live fake french passport local media report own two shop nearby alexanderplatz checkpoint charlie redlich could confirm landmarks target however.the spokesman say police act tip-off provide details.similar raid also take place german regions north rhine westphalia low saxony berlin alone 450 police officer engage operation german media reported.the main suspect 35-year-old algerian man detain thursday raid town attendorn say possible leader terrorist cell also seek algerian authorities allegations member terrorist group.he enter germany autumn 2015 travel so-called balkan route time 35-year-old register bavaria refugee.both men monitor since end 2015 security service receive tip-off might infiltrators.another unnamed 26-year-old algerian also register refugee live shelter central hannover suspect police cell communication agent also think possible tie belgian islamists travel molenbeek district brussels know harbor jihadists least recent weeks abdelhamid abaaoud mastermind behind november paris attack molenbeek resident.germany take 1.1 million refugees 2015 fifty-four percent germans believe terror threat country rise high number incoming migrants accord late spiegel poll via rt open-border liberals put entire nation high alert german spy chief warn 1,000+ radical islamists ready attack…over 100 isis members among refugees