Reacting to a recent series of vehicle break-ins and thefts locally, Westport police issued a reminder to residents to refrain from leaving keys or valuables in their vehicles and to routinely lock them.

In most of the recent stolen-vehicle cases, according to a statement police issued Thursday, the keys were left in unlocked vehicles.

In all of the break-in incidents, where vehicles were entered and items stolen, doors were left unlocked, police said.

The recent thefts have occurred primarily overnight.

Police also warned residents not to leave valuables — such as electronic devices, purses and wallets — in a vehicle for the night. They also recommend keeping outside lights illuminated for the night, with motion-activation if possible.