Arbroath secured a spot in the Scottish Championship with an impressive 4-0 win against Stenhousemuir, who finished in third place.
The Red Lichties scored three quick goals around half-time, with Sam Stanton scoring twice, leading them to clinch the League One title.
Fraser Taylor also scored during the goal spree, and Andy Winter added another goal later in the game, extending Arbroath's lead over Cove Rangers to 11 points with only three games left to play.
Cove Rangers boosted their promotion hopes with a 3-1 victory over bottom-of-the-table Dumbarton.
After two consecutive losses, Rangers dominated the game with goals from Dylan Lobban and Fraser Fyvie in the first half.
Although Dumbarton managed to score early in the second half through Kristian Webster, Lobban secured his brace with a goal in the final minutes of the match.
Queen of the South continued their winning streak with a 2-1 victory over 10-man Montrose at Palmerston Park, maintaining their position in the top four.
Adam Brooks opened the scoring for the home team, while Montrose's Terry Masson received a red card in the first half. Jordan Allan added a second goal for Queen of the South, with Montrose pulling one back through Blair Lyons late in the game.
Alloa secured a 1-0 win over Annan thanks to a goal from Magnus MacKenzie in the second half, whereas Kelty Hearts emerged victorious with a 2-0 win over Inverness, courtesy of late goals from Luke McCarvel and Robbie Cole.
In the League Two, Peterhead maintained their title challenge with a narrow 1-0 win over Spartans, with Cammy Smith finding the back of the net in the first half.
East Fife stayed in contention, four points behind the leaders, after a 2-0 win against Bonnyrigg Rose, who ended the match with ten men and in danger of a relegation playoff.
Nathan Austin scored early in the second half for East Fife, while Bonnyrigg's Ryan Porteous was sent off for two yellow cards just after the hour mark. A late goal from Adam Laaref sealed the victory for East Fife, leaving Bonnyrigg seven points adrift with three games remaining.
Edinburgh City defeated promotion rivals Elgin 2-0 at Meadowbank Stadium with goals from Malik Zaid and Innes Lawson.
Stirling kept their top-four aspirations alive with a 3-1 win over Stranraer, thanks to a double from Ryan Shanley, while Clyde and Forfar played out a 1-1 draw at New Douglas Park.