World Bulletin / News Desk
German police have arrested a Tunisian man after discovering "toxic substances" at his flat in Cologne, officials said Wednesday, with prosecutors not ruling out a possible terror motive.
The suspect's wife was also taken in for questioning but is believed to have since been released.
"We decided to take very swift action to ward off possible danger," police spokesman Andre Fassbender told DPA news agency.
The 29-year-old Tunisian man is suspected of "handling toxic substances", police said.
Federal prosecutors have opened an investigation against the Tunisian on suspicion of "preparing a serious act of violence against the state".
A spokesman for the federal prosecutor's office, which handles terror-related cases in Germany, told AFP they were not investigating the wife.
According to broadcaster NTV, the woman is a German national who recently converted to Islam. She was said to be pregnant.
Police officers, including special forces, were still combing the couple's flat on the first floor of a large apartment building on Wednesday.
Chemical experts wearing protective gear were seen removing plastic bags from the scene.
The couple's children have been taken into the care of city authorities.
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