Jurors at Preston Crown Court have been discharged after failing to reach a verdict in the case of match commander David Duckenfield.
Duckenfield was accused of the gross negligence manslaughter of 95 Liverpool fans.
But the jury found Graham Mackrell GUILTY of a health and safety breach linked to the 1989 football disaster.
'Hung jury' means that required majority of jury unable to agree on a verdict one way or another. The CPS will now carefully consider the position - it may decide to proceed with a retrial against Duckenfield, but it may also decide not to proceed.
It is understood the prosecution will seek a retrial of David Duckenfield.
Ninety-six men, women and children died in the crush in pens at the Leppings Lane end of the Sheffield Wednesday ground at the match between Liverpool and Nottingham Forest.