Friday, April 16, 1999 Published at 13:05 GMT 14:05 UK
Confusion over refugee bombings
Confusion continues to surround the reported bombing of three separate convoys in southern Kosovo on Wednesday.
Serbian officials in Pristina say the incident took place near Meja, adjacent to Djakovica, and claimed more than 60 civilian lives.
It has not been explained how this description of events falls in with the alliance's statement that only one bomb was dropped.
Mr Shea said there was no new information. A video of the attack on the refugee convoy would not be made public until Nato had finished its investigation, he added.
In a second alleged Nato attack, bombs dropped between Djakovica and Prizren to the south are said to have killed six and wounded 11.
And in a third report, refugees said they saw a convoy bombed between Prizren and the town of Morini.
This attack remains unconfirmed by either Nato or the Yugoslav authorities.
'Scepticism' about Serb claims
Yugoslav television has been showing pictures of two separate scenes of what they say are attacks on refugee convoys. One shows a column of destroyed vehicles on a tarmac road and the other on a dirt track.
It was not made clear where either site was located.
But the alliance has repeatedly cast doubt on the authenticity of many Serb claims.
Journalists taken by Serbian authorities to the scene of one alleged site, between Prizren and Djakovica, were shown evidence of air strikes but say it is impossible to judge the authenticity of Serb claims.
BBC correspondent Michael Williams, who visited the area between Prizren and Djakovica, said that he had seen the bodies of refugees and four impact craters - suggesting four bombs had ben dropped.
This tallies with eyewitness accounts suggesting more than one bomb was dropped on the convoy.
He said there was no evidence of military vehicles, but that 36 hours had elapsed since the bombing raids allowing plenty of time for the scene to be "doctored".
Observers suggest that as the air war progresses and without independent confirmation on the ground, what actually happened in each of the three incidents may never be known.