Police arrested a Ronkonkoma man accused of burglarizing nine commercial businesses this year across Suffolk County.

Robert Blackmore was arrested on the Long Island Expressway in Dix Hills Friday night.

Police say he threw a rock at the glass, entered and stole cash from businesses in Ronkonkoma, Islandia, Smithtown, Hauppauge, Commack, Bohemia and Patchogue.

Blackmore was charged with nine counts of burglary.