A technical problem prevented SEPTA riders from reloading their Key Cards for about four hours Monday morning.

The nature of the glitch was not immediately clear, but SEPTA spokesman Andrew Busch said it was resolved around 10:45 a.m.

The problem was originally reported between 6:30 a.m. and 7 a.m, just as the morning rush hour was starting, and affected commuters reloading their cards at kiosks.

Affected riders were allowed to ride for free during the outage, Busch said.