Mark Briggs put Mosta ahead on the 40th and Dylan Zarb levelled matters three minutes in the second half.
Meanwhile leaders Balzan Youths moved ten points clear as they beat Msida St. Joseph 5-0. The Youths therefore secure promotion to the Premier League.
Pedro Dos Santos Calcado scored four of the goals on 10, 16, 39 and a penalty on 77 minutes. Lydon Micallef
added another on 85 minutes.