UN security officers guards the area of the European headquarters of the United Nations in Geneva, Switzerland, Thursday, December 10, 2015. Geneva police were "actively searching" Thursday for suspects in connection with an investigation into the Paris attacks last month, and authorities raised the security alert level in the city and surrounding region, Swiss security officials said. (Salvatore Di Nolfi/Keystone via AP)
A UN security officer guards the area of the European headquarters of the United Nations in Geneva, Switzerland, Thursday, December 10, 2015. Police in Switzerland are hunting for four terror suspects, according to reports. Geneva police were "actively searching" Thursday for suspects in connection with an investigation into the Paris attacks last month, and authorities raised the security alert level in the city and surrounding region, Swiss security officials said. (Salvatore Di Nolfi/Keystone via AP)
Swiss police officers patrol at the airport during a high level of alert in Geneva, Switzerland, Thursday, Dec. 10, 2015. Geneva police were "actively searching" Thursday for suspects in connection with an investigation into the Paris attacks last month, and authorities raised the security alert level in the city and surrounding region, Swiss security officials said. (Salvatore Di Nolfi/Keystone via AP)
Swiss police officers control a car at the Geneva airport during a high level of alert in Geneva, Switzerland, Thursday, December 10, 2015. Geneva police were "actively searching" Thursday for suspects in connection with an investigation into the Paris attacks last month, and authorities raised the security alert level in the city and surrounding region, Swiss security officials said. (Salvatore Di Nolfi/Keystone via AP)
Swiss police officers control a car at the Geneva airport during a high level of alert in Geneva, Switzerland, Thursday, December 10, 2015. Geneva police were "actively searching" Thursday for suspects in connection with an investigation into the Paris attacks last month, and authorities raised the security alert level in the city and surrounding region, Swiss security officials said. (Salvatore Di Nolfi/Keystone via AP)
A Swiss police officer controls the area in front of France's mission during a high level of alert in Geneva, Switzerland, Thursday, Dec. 10, 2015. Geneva police were "actively searching" Thursday for suspects in connection with an investigation into the Paris attacks last month, and authorities raised the security alert level in the city and surrounding region, Swiss security officials said. (Salvatore Di Nolfi/Keystone via AP)
Swiss police officers patrol around the European headquarters of the United Nations in Geneva, Switzerland, Thursday, Dec. 10, 2015. Geneva police were "actively searching" for suspects in connection with an investigation into the Paris attacks last month, Swiss security officials said Thursday. (Salvatore Di Nolfi/Keystone via AP)
A Swiss police officer controls the area in front of the Russian mission in Geneva, Switzerland, Thursday, Dec. 10, 2015. Geneva police were "actively searching" for suspects in connection with an investigation into the Paris attacks last month, Swiss security officials said Thursday. (Salvatore Di Nolfi/Keystone via AP)