A Hungarian court has ordered the preliminary arrests of four men suspected of being involved in the deaths of 71 migrants found in a truck in Austria.

Ferenc Bicskei, president of the Kecskemet Court, said that the preliminary arrests would be in place until the suspects are indicted on September 29 at the latest.

Mr Bicskei said the four suspects appealed the court decision, saying they had not committed any crimes.

Prosecutors said the severity of the crime and the risk that the suspects would flee justified their arrest. The suspects were detained in Hungary on Thursday.

The three Bulgarian suspects are aged 29, 30 and 50, officials said, while the Afghani is 28 years old.