Leicester manager Nigel Pearson says he will be looking to strengthen the side in the January transfer window after watching npower Championship leaders Cardiff win 1-0 at the King Power Stadium.
A 25th-minute goal from Craig Bellamy sent the Foxes crashing to defeat and put a dent in their promotion hopes. They are now 10 points behind Cardiff.
The Foxes dominated the first half but found themselves behind when Bellamy produced a clinical finish to volley home Craig Conway's cross.
"When you create as many goalscoring opportunities as we did you would expect to score," said Pearson. "But today we came up against a side that, to be fair to them, defended well and had a lot of experience. They hit us with a sucker punch and in the second half it fizzled out a little bit. It was a frustrating day.
"We didn't manage the ball as well as I would have liked but you have to give them a bit of credit. They got everyone behind the ball and tried to hit us on the break.
"But we deserved to get to something out of the game. Scoring goals obviously is the key factor to winning games but I would be more concerned if we were not creating chances.
"We are putting together a promotion push but things have not gone our way in the last few weeks. What we must do is keep in contact with the sides in the automatic places. I might go for a striker in the January transfer window if the right one is available."
Cardiff manager Malky Mackay said he was delighted by the way his players " bounced back" after the shock home defeat by Peterborough a week ago.
"This was a really big win for us after losing to Peterborough and it was smashing the way we bounced back from that. I'm delighted," he said.
"We knew we were coming to play a very good team and that it was going to be tough. But I think this was a great advert for the Championship - and I'm not saying that just because we won. It was two teams playing attractive football and at a hell of a tempo."