Sheriff's deputies have arrested a 48-year-old man on charges that he robbed a James Island restaurant at gunpoint, an agency spokesman said Friday.

Troy David Williams, 48, of Dover Street in North Charleston faces charges of armed robbery and possession of a firearm during a violent crime in the incident just after midnight Sunday morning at Zia Taqueria, sheriff's Maj. Eric Watson said.

Williams was arrested Thursday night.

The Charleston County Sheriff's Office responded to the Mexican restaurant at 1956A Maybank Highway at 12:14 a.m. Sunday. Deputies learned that someone had entered through an unlocked back door and pointed a pistol at a worker. The man's face was partially covered.

The employee told him that there was no money, according to arrest affidavits.

"You think this is a game?" the robber responded before putting a round in the gun's chamber, according to the documents.

The robber found several envelopes used to transport cash and ran away, the affidavits stated. A sweep of the area did not turn up any suspects.

Surveillance cameras captured the encounter. Deputies said in the affidavits that they recognized Williams as the robber because of past dealings with him.

He was expected to have a bond hearing Friday night.

Reach Andrew Knapp at 937-5414 or twitter.com/offlede.