Authorities have begun formally investigating three French jihadists recently returned from Syria who are suspected of preparing terrorist attacks; two of them have links to Toulouse shooter Mohamed Merah. The three suspects, who were already subject to investigation since September 2013 for ties to the “Artigat” network of jihadists in southern France, were arrested in Turkey. On Sept. 25, President Hollande said security will be stepped up in public places, and that France will increase its assistance to Syrian rebels who are fighting jihadists and is also ready to help other countries combat terrorism.