A British television journalist and a Kenyan camerawoman arrested for filming a police station in Nairobi were released without charge, the BBC said Sunday.

Dan Edge, 29, and Susan Kurumba, 27, were arrested Friday after being caught outside Kileleshwa police station in the Kenyan capital, sparking concern in Britain.

British High Commissioner to Kenya Adam Wood (L) and human rights lawyer Haroun Ndubi walk out of the Kileleshwa police station in Nairobi, where a British journalist Dan Edge has been held by police. Edge and Kenyan camerawoman Susan Kurumba were released without charge after being arrested for filming the police station, the BBC said Sunday[AFP]

The pair were filming for British broadcaster Channel 4's news documentary programme Dispatches.

Citing a Channel 4 spokeswoman, the BBC said the pair had been released Saturday after being interviewed as terrorist suspects.

The spokeswoman said no further action would be taken against the two and Edge was now free to fly to Ethiopia as planned to continue filming.

They were both in good health, she added, stressing that they had held all the required permits to film a documentary on terrorism in Kenya.

Edge works for Channel 4 while Kurumba works with Kenya's Vivid Features.

In Nairobi, their lawyer Harun Ndubi and colleague Steve Grey had appealed for their release.

Grey said the two were making a documentary on the renditions to Somalia and Ethiopia of hundreds of people who were arrested by Kenyan police while fleeing fighting between Ethiopian forces and Somali Islamists.

"It is about the situation in the Horn of Africa and obviously terrorism is one aspect of it ... We will go to Ethiopia and see the situation there, in Somalia -- it is a broad documentary," he told reporters.

"We were shocked," Ndubi said, adding that they were being investigated on terrorism grounds "when indeed they came here to shoot a documentary film on terrorism and the government's efforts to fight the vice."

In London, Dispatches editor Kevin Sutcliffe said he was surprised they had been arrested "given that earlier in the day the crew had been conducting an interview with the Kenyan foreign minister."

The Kenyan authorities stepped up security after the east African republic was twice hit by extremists linked to Osama bin Laden's Al-Qaeda network.

New York-based Human Rights Watch said Kenyan security forces arrested at least 150 individuals from some 18 different nationalities at the Liboi and Kiunga border crossing points with Somalia.