Lambert and Finnish Big Brother star Sauli Koskinen's argument reportedly started inside the bar in Helsinki, but eventually poured out into the street. Lambert allegedly got physical with people who tried to break up the fight, as well ... before police arrived and took him and Koskinen into custody.
They were arrested for multiple assaults, according to a Finnish newspaper.
The former American Idol star is currently on vacation in the country with his Finnish-born partner Sauli Koskinen.
The pair was enjoying a night out at Helsinki gay club Don't Tell Mama when they were allegedly involved in a scuffle.
Police were reportedly called to the venue to break up the brawl, and officers then took Lambert and Koskinen to separate cells.
However, it seems as though the couple has made amends. Hours later, Lambert tweeted, "Jetlag+Vodka=blackout. Us÷blackout=irrational confusion. jail+guilt+press=lesson learned. Sauli+Adam+hangover burgers= laughing bout it. :)"
