ROYAL OAK, Mich. -

For the second time in a month, police in Royal Oak are investigating a rash of car break-ins.

On Friday, cars in the area of Robinwood and Elmwood Avenue were burglarized.

No arrests have been made.

Back on May 28, a dozen cars were broken into in an hour. Thieves smashed windows and stole laptops, phones and other electronics.

It's not clear if the break-ins are connected.