Hungary migrants walk through night towards Austria
Hungary is to send buses to transport migrants to Austria's border after more than 1,000 began walking there earlier on Friday.
They left Budapest station on foot after a stand-off with police, defying official efforts to take them to reception centres and register them.
Earlier on Friday another group escaped along railway tracks in Bicske, to the west, from a train stopped by police.
Gavin Hewitt reports.