MG gs called the police after locking the car for a few minutes.

Someone pried open the door or opened it with a key.

If the car is locked, the drip sound indicates that the anti-theft alarm function of the car works. This function means that after the owner locks the car remotely, the alarm will enter the alarm state.

If someone knocks at the door or opens the door with a key, the burglar alarm will sound immediately.