By Will Butcher

Leeds defender Pontus Jansson has revealed that he is in the dark over the hamstring injury that he picked up against Bristol City.

The 25-year-old was replaced at half time against the Robins by Liam Cooper, as Leeds crashed to a 1-0 defeat and simultaneously ended their run of four straight wins.

Jansson, on loan from Serie A outfit Torino, posted on his personal Twitter account that he “does not know so much” and is hoping “it is okay”.

The update on Tuesday night will be a concern to supporters, who have identified him as one of the team’s key players following the fine start to his Leeds career.

The 6ft 5in colossus appeared to suffer a hamstring problem towards the end of the first half before hobbling down the tunnel prior to the interval.

The eight-time Sweden international has made a huge impression at Elland Road, with his introduction into the Leeds starting eleven coinciding with the Yorkshire Giants’ impressive run of form.

His partnership with Kyle Bartley at the heart of the Leeds defence had seen Garry Monk’s side keep three consecutive clean sheets, before midfielder Marlon Pack struck to give Bristol City a 1-0 win.

A win for Leeds would have helped continue their upward surge towards the playoffs, but the loss has pushed them back into the bottom half of the table to 14th position.

Former Swansea boss will be hoping that his side can deliver some sort of momentum before the international break, as his side host Yorkshire rivals Barnsley on Saturday.

In other Leeds news,  the club have suffered a blow as a senior star has been ruled out for another three weeks.