Two journalists were reported to have been killed in heavy shelling in the Syrian city of Homs, Reuters said.
The news agency named the reporters as Sunday Times journalist Marie Colvin and French reporter Remi Ochlik. Reuters quoted a source in Syria who said the building Colvin and Ochlik were in was hit by a shell.
The Telegraph reported that the building was a "makeshift media centre". At least one other journalist was reported injured in the blast.
The Syrian Network for Human Rights published video online that they said confirmed the deaths, but which initially appeared inconclusive.
It was also reported that Rami al-Sayed, a citizen journalist who provided media outlets including the Huffington Post UK with live footage from Homs, was killed in the shelling.
Activists said that 100 people had been killed in the latest series of attacks. Around 60% of the city's population of 100,000 have left since the start of the violence, it has been estimated, according to The Huffington Post.
