COS COB - A Greenwich teen was arraigned in court today on charges that he robbed two homes in a Cos Cob neighborhood over the weekend.

Police say investigators found Mark Johnson in the house on Shelter Road after responding to an alarm. Authorities say Johnson jumped out of a window and they had to wrestle him to the ground to arrest him.

The 18-year-old has been arrested before, according to investigators. The break-ins on Shelter Drive were the third and fourth home burglaries in Greenwich this week.