One man was stabbed and 12 others were arrested after a huge brawl at Seaford.

Up to 100 people are believed to have been involved in the fight at Kananook train station about 5.30pm yesterday.

A 23-year-old man was left with stab wounds in the stomach.

He’s in a critical condition in Frankston Hospital after being dropped of by a group of unknown men.

As part of investigations, police have seized weapons from three vehicles including baseball bats, a samurai sword and a machete.

Twelve men remain in custody; they are aged from 19 to 32 and come from suburbs including Sunshine West, Carlton, Deer Park, Dandenong and Melton.

Police want to hear from any witnesses.