Police in Britain on Saturday denied accusations that they had failed to pass on information that could have helped families stop three teenage girls from traveling to Syria to join ISIS, Reuters reported. Shamima Begum and Amira Abase, both 15, and Kadiza Sultana, 16, were reported missing on Feb. 17. They flew to Turkey that day and police believe they subsequently made their way to Syria. Police officers had spoken to the girls in the weeks preceding their departure as part of an investigation into the disappearance of one of their school friends, an unnamed 15-year-old girl, who had left for Syria on Dec. 6. Several relatives of the girls have complained to the media they had not been told about the first girl who had gone to Syria.