Rocklin Police officers have arrested four individuals they believe were involved in numerous burglaries throughout Rocklin, including several at California Fitness Club. Arrested on various charges were Tiffany Bruner, 20, of Sacramento, Diana Melnichuk, 19 of Antelope, Maksim Mishchenko, 21 of Antelope and Sergey Stepanyuk, 23, of Rancho Cordova. Around 10 a.m. on Saturday, officers responded to a call of suspicious activity in the parking lot of California Fitness at the corner of Park and Sunset Boulevard. When officers approached a suspicious vehicle with three individuals inside, they were told the fourth person was inside the fitness club collecting items from her locker. Due to recent thefts inside the club, officers went inside to look for the woman. As the officers walked with her to the front door, the woman took off across the parking lot. A short time later she was taken into custody. During the investigation, officers found narcotics and numerous items of property taken during several burglaries in Rocklin. Some of the items had been taken from California Fitness lockers earlier and were returned to their owners.