MONTREAL — A 60-yard interception return touchdown by Maurice Leggett lifted the Winnipeg Blue Bombers to a 32-18 victory over the Montreal Alouettes on Friday night.

The Bombers (5-4) won their fourth game in a row with Matt Nichols as the starting quarterback as Justin Medlock kicked six field goals and Andrew Harris ran in a late TD.

Stefan Logan and backup quarterback Vernon Adams scored touchdowns and Anthony Fara had a field goal for Montreal (3-6), which fell short in its bid to win two games in a row for the first time this season after a big win last week in Ottawa. Montreal is 1-4 at home this season, while Winnipeg improved to 4-1 on the road. The Bombers have won four straight away games.

A crowd of 19,026 saw the Bombers take a 19-18 lead into the intermission thanks to a pair of interceptions and four field goals.

A 51-yard Quincey McDuffie kickoff return set up Medlock's first boot from 39 yards, and a Justin Cole pick on Montreal's first possession set up a 47-yard field goal at 5:38. Then Derek Jones blocked a Fara punt and Medlock was good from 13.

Kevin Glenn finally got it going on his next possession and led an eight-play drive capped by Logan's nine-yard score on a shovel pass at 12:44.

Gabriel Knapton recovered a Harris fumble and, six plays later, Adams scored from the one to put Montreal ahead 15-9 3:18 into the second quarter.

The Bombers answered with Medlock's 20-yard boot.

Then Leggett picked off a Glenn pass and returned it 60 yards for the TD at 9:55 of the second quarter. It was a third interception return TD this year for Leggett, who had two picks against Toronto two weeks ago. Montreal answered with a 26-yard Fara kick to end the half.

After a scoreless third quarter, Medlock kicked his fifth field goal of the game from 40 yards 5:48 into the fourth.

Harris ran in from 19 yards with 2:06 left in the game. A Taylor Loffler interception clinched the win and set up Medlock's sixth boot of the game. It was his 20th successful field goal in a row, a career high. Khalil Bass had a pick on the last play, the Bombers fourth of the game.

With back Tyrell Sutton's return from injury, Montreal's Brandon Rutley was a healthy scratch.

It was the first game that a new CFL rule on challenges was in place and Winnipeg's Mike O'Shea used it first when he successfully got a pass interference call against Montreal, but he tried it again unsuccessfully in the second quarter and lost a time out. The new rule charges a time out for a first challenge that fails.

Montreal also lost a challenge.

The rule did not speed up the game as intended due mainly to frequent flags.