An autopsy has confirmed that a 22-year-old Syrian man who was believed to have been plotting a bombing attack killed himself in his jail cell in Leipzig, German authorities say.

A Syrian man suspected of planning a bomb attack was checked by a trainee guard 15 minutes before he was found dead in a German jail cell, authorities say.

A Syrian man arrested in Germany over a suspected Islamic extremist bomb plot has killed himself in a prison cell in Leipzig, according to Saxony's state Justice Ministry.

A 22-year-old Syrian man arrested over a suspected Islamic extremist bomb plot has killed himself in a prison cell in Leipzig, according to Saxony's state justice ministry

Update (1.27pm): A Syrian man arrested on suspicion of planning a bomb attack in eastern Germany is believed to have contacts in the so-called 'Islamic State' (IS) group, according to police.