Newcastle manager Rafa Benitez: "Obviously I am disappointed. We conceded two goals from set-pieces and didn't take our chances.
"The second goal killed us mentally. Leicester were well-organised and worked hard and they have some good players.
"When you concede, it is always difficult for you. When things are not going in your favour you concede penalties like that.
"We have to manage the squad. We tried to be more offensive but we didn't take our chances and we were exposed in the second half. The team is working hard, you cannot complain about that.
"I have not spoken to Mike Ashley today, but if he is around it is positive. We have to concentrate with things on the pitch."
Leicester manager Claude Puel: "Of course I am satisfied. It was a strong performance against a good team. We continue to play on the floor with quality.
"We had fantastic discipline. It was a tough game. People will say Newcastle are in difficulty but they have quality.
"Harry Maguire's first game of the season was difficult for him without much pre-season, but this afternoon he played very well. Congratulations to him. He always has a positive attitude and he is a fantastic guy.
"James Maddison continues to give his best and improve. He has to continue that work and we will see in the future."