Two British teenagers arrested and deported from Kenya have been released by the Metropolitan Police without charge after being detained under the Terrorism Act.
Mohamed Mohamed Abdallah, of Somali descent, and Iqbal Shahzad, of Pakistani descent, were arrested by anti-terror officers in Kenya at the weekend.
Both went missing from their homes in Cardiff, south Wales, more than a week ago, and it was feared that they had been radicalised by militant Islamists.
A spokesman for Scotland Yard said two 18-year-old men were detained after arriving at Heathrow Airport from Kenya at approximately 5pm on Wednesday, before being released six hours later without arrest.
Abdirhman Haji Abdallah has spoken of his desperate dash to Kenya fearing son Mohamed planned to join Islamist rebel group al Shabab.
He met the authorities in Kenya, identifying the teenagers to the police and passing a photograph of his son to them.
Both teenagers were arrested before crossing the border into neighbouring Somalia. They were escorted on to a plane in Nairobi, the capital of Kenya, and deported.
Police revealed that both were under surveillance from the moment they arrived in Kenya.
A joint statement released by the Muslim Council of Wales, the Somali Advice and Information Centre and Cardiff's Nur Al Islam Mosque read: "The two youths from Cardiff are back from Kenya and now are with their families.
"They are well and pleased to be with their families and communities. The Muslim community and the wider community welcomed this good news."