If arrested, the suspects could be charged with burglary of an unoccupied structure and grand theft. The burglary charge would normally not be present since the alleged thefts occurred in a public shopping center. However, since the thefts reportedly occurred after business hours, the shopping center was likely closed, therefore not open to the public. Since the suspects did not have the right to enter the shopping center, any crime that occurs on the premises could be charged as a burglary.
The grand theft charge will be sustained regardless due to the value of the units.