Syrian state television has quoted a military official saying the plane shot down by Turkey was pursuing rebel fighters within Syria's own territory.
The Turkish Prime Minister has said the jet was shot down because it had violated Turkish air space.
More top news
There's a wider purpose to Prince Charles' nine-day visits to Romania, Italy, Austria today.
A man and a woman, both in their early 20s, have been arrested in Birmingham on suspicion of terrorism offences.
Robert Weighton and Alfred Smith only became pen pals two years ago - and today Britain's oldest men both celebrated their 109th birthdays.