ran out of gas on 2002 Mitsubishi Diamante

car was out of gas, replenished the tank, now it wont start or release the key. it doesn't even try to turn over.

Asked by for the 2002 Mitsubishi Diamante
Sounds like the battery may have been run down. Try to test and charge your battery. If it is fully charged and tests good, check the rest of your electrical system - starter, etc. Sounds like an electrical issue.