Nicholas James Fisher, 27, is booked in the Lane County Jail for robbery, theft, menacing and unlawful use of a weapon.
Eugene police say he walked into the Serv-U market on Barger Drive Monday night, wearing a ski mask and robbed the clerk at gunpoint.
Witnesses say they chased the suspect out of the store.
This a developing story. Watch KEZI 9 News at 5 for a full report.