Can i erase my stolen macbook pro with find my mac even if it states the device was locked on a specific date (not by me) after being stolen?

Do you know if the locked on such and such date means that the device locked itself after too many failed attempts to enter password, or that the device was hacked despite password and locked by the thieves?

Barry, the other stolen computer, my IMac does not show me a locked on such and such date, but simply says offline. I set that computer to erase when it goes online and notify me when it is found, and to play a tone and play a message that the police are on their way!