One of two brothers who was part of a group planning to travel to Syria and fight alongside the terrorist organisation ISIS has been jailed at Woolwich Crown Court.
Ahmed Alsyed, 20, of west London, was sentenced to four-and-a-half years' imprisonment after pleading guilty to collection of information, preparation of terrorist acts and dissemination of terrorist publications.
His brother Yousif Alsyed, 18, also plead guilty and will be sentenced on a date to be confirmed.
Detectives from the Met's Counter Terrorism Command began their intelligence-led investigation into the group's activities in spring 2016. They identified that an unknown individual was using the encrypted messaging app Telegram to send messages relating their aspirations of travelling to Syria to "become a martyr".
The individual, who in one message said he was waiting for the "green light to travel", was using the moniker 'Abu Ibrahim'.
Through their enquiries, specialist digital forensics officers established that Yousif Alsyed was the individual posing as 'Abu Ibrahim'.
On 10 August 2016, police officers at Heathrow Airport stopped the Alsyed brothers under schedule 7 of the Terrorism Act 2000 after they arrived on a flight from Egypt, where they had been holidaying.
Detectives seized their mobile phones and analysed them, recovering a significant quantity of Islamic extremist propaganda material. They also recovered Telegram conversations between the brothers and an individual in Yemen discussing plans for travelling to Libya or Syria for the purpose of joining ISIS.
The investigation continued, expanding to look at three other like-minded individuals identified that the brothers had been messaging.
Commander Clarke Jarrett, of the Met's Counter Terrorism Command, said: "The evidence we recovered showed the clear intent of the Alsyed brothers to go to Syria, where they would join Daesh.
"It is patent to me that their intention, once they had joined the terrorist group, was to fight alongside it as the brothers had invested time in training in the UK, including spending time at a paintballing camp and joining a gym.
"The brothers shared with each other gory videos and images glorifying Daesh. They had their hearts set on joining their fight but our investigation stopped them."