City's 10-man side consigned to another loss at Sixfields against Midlands rivals Northampton...Keshi Anderson hit a hat-trick as City suffered defeat against the Cobblers, amid constant interruptions from protesting fans.
The game was disrupted more than once, as fans entered the pitch and threw flares on to the field of play. City boss Russell Slade was disappointed with the manner of goals his side conceded, despite having to play much of the game with a man less.
He said: "I thought we were the better side in the first 15-minutes and the sending off was pivotal. It gave them a huge lift and puts us down to ten. We got through to half-time and the first goal was key, it went to the side with eleven men.
"Disappointed with the goals we conceded, no excuses. They were poor. We had no real response, so a difficult afternoon.
"We gave the ball away in the middle of the park, we don't adjust well enough at the back. Conceding from a set-play, and the last goal everyone stopped. You play to the whistle and we were punished."
Skipper Jordan Willis was dismissed inside the first quarter of the game for City, for what the referee deemed to be a reckless challenge on David Buchanan. The Sky Blues held out until the 53rd minute, but conceded three second half goals as Crystal Palace loanee Anderson netted a hat-trick.
Slade added: "It is a bit harsh, having looked at it. He's won the ball, but it has been construed as dangerous.
"You want to be in there battling and scrapping, we've got to stay in games when things are against us. We had a soft underbelly when we went 1-0 down, it zapped us.
"We tried to regroup, we can only control what we can as football managers and coaches. Try to keep the team focussed. I'm trying to get the team right for the club, the fans, and we need to win football matches.
"For all the preparation in the world, when a sending off happens it throws it in to turmoil. The first goal was key and it went their way."