Sean O'Brien

Austin police say a Lockhart man is responsible for the so-called Roman candle robberies in the past few weeks.

Police arrested 44-year-old Sean O'Brien at his home in Caldwell County on Saturday, charging him with three counts of aggravated robbery.

He was in Travis County Jail on Monday with a combined bail set at $225,000.

Austin police say a man wearing a mask and carrying a hammer robbed a gas station convenience store in the Westlake area on Oct. 1, the fourth such incident over a five-day span.

RELATED: Austin police seeking masked man in robberies

Police had released an image of what they believed to be the robber’s car, a dark blue Hyundai Sonata with damage to the right rear passenger window.

During the first and second robberies – in which the robber came into the store with a lit Roman candle – the robber wore a yellow Jabbawockeez mask, but during the third and fourth robberies, the person wore a different mask.

The following Austin convenience stores were also hit:

A Shell gas station off MoPac Boulevard (Loop 1), just south of Anderson Lane on Sept. 27A 7-Eleven on Airport Boulevard and East 38½ Street on Sept. 29A 7-Eleven on Burnet Road, just north of Research Boulevard, on Oct. 1