TV watchdog Ofcom has launched an investigation over the decision by broadcasters to air footage before the watershed from the scene of the murder of soldier Lee Rigby.
Drummer Rigby, 25, was hacked to death in Woolwich, south-east London, on May 22.
Ofcom is investigating BBC News, 5 News, ITV News, Channel 4 News and Sky News among others, following a number of complaints about footage obtained by a bystander on a mobile phone.
It will assess whether the footage was appropriately scheduled for children and whether any potential offence could be justified by the context.
Michael Adebolajo, 28, from Romford, Essex, is charged with murdering Drummer Rigby near Woolwich barracks on May 22.
He is also accused of the attempted murder of two police officers and possession of a firearm, a 9.4mm KNIL model 91 revolver, with intent to cause others to believe that violence would be used.
Michael Adebowale, 22, from Greenwich, south east London, has also been charged with the soldier's murder and possession of a firearm.