A 43-year-old male is in serious condition after he was stabbed on Hotel Street. 

The incident happened outside Smith's Union Bar around 9:30 p.m. Friday.

He was stabbed with an unknown object and was transported to the Queen's Medical Center. 

Witnesses say a bunch of people were yelling at each other in front of the bar when one man went after another.

The next thing they saw is a guy holding his chest and falling back on the curb with blood running down his chest.

Bystanders had to administer medical aid before emergency responders arrived.

Anyone with information is asked to call Honolulu Police at 529-3111.