Several hundred migrants stormed into Budapest's main international train station early Thursday after police re-opened it following a two-day standoff, an AFP reporter said.

The main entrance was re-opened shortly before 08:15 am (0615 GMT) and migrants -- some of the 2,000 or so stuck in Budapest since Tuesday -- burst in, heading towards a train at one of the platforms, the AFP reporter said.

A public announcement said however that no international trains would be leaving the Keleti station "for an indefinite period".