Trent Richardson, left, was traded to the Indianapolis Colts Wednesday night in a surprise move. Richardson was the No. 3 overall pick in the 2012 NFL draft. (Charles Rex Arbogast/AP)

The Cleveland Browns have traded Trent Richardson, the No. 3 overall pick in the 2012 NFL draft, to the Indianapolis Colts for a 2014 first-round draft pick.

ESPN’s Adam Schefter first broke the news on Twitter Wednesday night, followed shortly by an announcement on the Colts’ Web site.

“OMG...the Earth is SHAKING!!!!! Shock and AWE is coming VERY SOON!!!!!!!” Colts owner Jim Irsay tweeted an hour before the news broke. Irsay’s Twitter feed had a series of tweets stating that a major announcement was on the way.

Richardson, 23, has started all 17 games for the Browns (0-2) — rushing for 105 yards with no touchdowns so far this season. He owns a career total of 1,055 rushing yards and 11 touchdowns.

The only running back currently on the Browns active roster is undrafted Bobby Rainey, who played at Western Kentucky.

As of early Wednesday night, the Colts (1-1) have running backs — in depth chart order — Ahmad Bradshaw, Donald Brown and Kerwynn Williams on the active roster. Bradshaw is the leading rusher on the team this season with 91 yards and one touchdown.

On Sunday, the Browns will play the Minnesota Vikings (0-2) while the Colts take on the San Francisco 49ers (1-1).