Dean Morgan bagged a brace as Wycombe thrashed York 4-0 at Adams Park this afternoon.
Gillingham closed the gap to two points to leaders Port Vale with a 1-0 win at Bradford, while Vale were held to a goalless draw at Barnet.
Billy Kee took his season's tally to 10 when scoring both of the goals in Burton Albion's 2-0 victory over nine-man Rotherham, while veteran striker Jamie Cureton also grabbed a double as Exeter defeated Morecambe 3-0.
Northampton Town recorded their fifth straight home win with a 3-1 defeat of Rochdale to remain in the playoff picture.
At the bottom of the table, Aldershot and Wimbledon lost to Plymouth and Chesterfield respectively.
Results in full: Accrington Stanley 1-1 Southend, Aldershot 1-2 Plymouth, Barnet 0-0 Port Vale, Bradford 0-1 Gillingham, Burton Albion 2-0 Rotherham, Chesterfield 2-0 Wimbledon, Dagenham & Redbridge 1-0 Cheltenham, Morecambe 0-3 Exeter, Northampton Town 3-1 Rochdale, Oxford United 0-2 Bristol Rovers, Torquay 0-1 Fleetwood, Wycombe Wanderers 4-0 York
