Emergency Medical Services responded to a call just after 1:00 a.m. outside of the "Lucky Strike" establishment in the Ala Moana Center.  
They located a 20 year-old man in the 3rd level parking lot suffering from apparent gun shot wounds.   
He was transported to a nearby trauma center in critical condition.  
Honolulu Police arrested a 23-year-old suspect and is in custody.
A second-degree murder investigation has been opened.  
This story will be updated as details become available.