Mikael Lustig has admitted that Celtic were "a bit sloppy" in their Scottish Premiership win over Partick Thistle at Firhill Stadium.

The Scottish champions secured a 2-0 win over their Glasgow rivals to give them back-to-back wins at the start of the new league season.

The defender told BBC Radio Scotland: "It is nice to come here and take three points. We started well, playing some excellent stuff for the first 30 minutes, but after that we became a bit sloppy."

Celtic are in action again on Wednesday when they travel to Kilmarnock.