CNN
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\n Eighteen people were injured, four critically, in a knife attack Friday in the German city of Hamburg, authorities said.\n <\/p>\n
\n Hamburg police said they have arrested a 39-year-old German woman, who they believe acted alone in carrying out the attack at the city\u2019s Central Station, after a major police operation. She is in police custody and expected to be brought to a court on Saturday, police said.\n <\/p>\n
\n Seven people were \u201cbadly injured,\u201d while seven others were \u201clightly injured,\u201d police said. The victims are aged between 19 and 85 years old.\n <\/p>\n
\n The four critically injured, who include a 24-year-old female, 24-year-old male, 52-year-old female and 85-year-old female, are in a stabilized condition, police said in an update on Saturday.\n <\/p>\n
\n Investigations into the incident are ongoing. Police said there was \u201cconcrete\u201d evidence that the suspect suffers from a mental illness.\n <\/p>\n
\n In a statement late on Friday, Hamburg police said the attacker had acted \u201capparently indiscriminately, stabbed passersby, injuring some of them critically.\u201d\n <\/p>\n
\n Video footage from the scene filmed by CNN\u2019s affiliate RTL Germany shows people in forensic suits inspecting the area while police gather in the train station.\n <\/p>\n
\n Following the attack, Germany\u2019s Friedrich Merz thanked the city\u2019s emergency responders for their assistance and said that his \u201cthoughts are with the victims and their families,\u201d according to federal government spokesperson Stefan Kornelius.\n <\/p>\n
\n Federal Minister of the Interior Alexander Dobrindt also said his thoughts were with the victims and thanked the emergency services. \u201cIt is shocking when travelers are attacked in a treacherous and cowardly manner,\u201d Dobrindt said.\n <\/p>\n
\n Hamburg\u2019s Central Station is the busiest passenger railway station in Germany, with more than 550,000 travelers per day, according to the city\u2019s website.\n <\/p>\n
\n Germany has faced rising rates of knife crime in recent years, with some incidents stirring up tensions over migration ahead of parliamentary elections<\/a> in February.\n <\/p>\n \n Some in the country were concerned by a series of high-profile attacks allegedly carried out by asylum seekers or migrants.\n <\/p>\n