A lack-lustre performance by East Fife saw them go down again against opponents who have become a real bogey team of late.
Although the first half was quite even and both sides had the odd chance, the home side took the game to the visitors in the second period and East Fife had no answer.
The Fifers started on the front foot and within a couple of minutes of the start a Cedric Tuta lay off found Johnstone whose effort clipped the top of the bar.
At the other end former Fifer Bobby Barr’s run saw him find Carcary, but Michael Andrews was up to the task and held his effort.
The home side had the better of it as the half progressed and were more dangerous in the last third by this stage with Jackson going very close.
Brechin’s Walker got free on the right and lobbed Andrews, as he left his line, but Gary Thom managed to hook the ball clear before it could cross the line.
A Joe Mbu mistake should have led to the opener when it left Barr clear, but he could not convert.
The Fifers did finish the half stronger, however, with first Smith blocking a close range effort from Buchanan and then a good move involving Moosari and Buchanan got the ball to Willis, but his effort went wide.
A McBride free kick caught out the home defence but no Fife player could get a foot on the dangerous ball across the penalty area.
At this stage the Fifers had their fair share of possession, but Buchanan was getting no change out the City defence.
Halfway through the half the home side opened the scoring.
There was lack of communication between McBride and Andrews for a routine lob into the area.
Neither cleared properly. The ball was sent out to the right and when returned Donnelly was on hand to complete the job.
The Fifers tried to change things by bringing on Ryan Stewart for Tuta, with Clarke moving up front, and a few minutes later with Ross Brown replacing Jonny Stewart – but to no avail.
Stewart tried hard to get into the game but got little change from his former team mates and Clarke had about the same amount of success as his striker partner.
The decisive goal came with seven minutes left. A lob through the middle saw Thom making a telling tackle, but the clearance broke to Trouten who sent the second goal past Andrews with a low shot.
A third looked on the cards when Walker broke through but his effort was blocked.
He then hit the post with Andrew an on-looker.