Munster face an anxious wait for a medical update after losing Alby Mathewson to a leg injury during their 30-22 Guinness Pro14 loss to Leinster.

Johann van Graan's men travel to Exeter next Saturday in the Champions Cup and are already without the services of scrum-halves Conor Murray and Neil Cronin.

Mathewson, who has five All Blacks caps, was brought in on a short-term deal to cover for the Ireland number nine, who has an undisclosed neck injury.

Duncan Williams replaced the New Zealander with five minutes left at the Aviva.

Asked for an injury update, the South African said: "[We've got] a lot of bumps and bruises.

"Alby Mathewson, we took off because of [a leg] injury. Our medical team are currently looking at him and hopefully, we will know more on Monday."

In a squad injury updated issued on 1 October, scrum-half James Hart was "progressing with rehabilitation" on a calf injury; Cronin, meanwhile, has a shoulder problem.

Leo Cullen said Leinster got through without any issues and that man of the match Ross Byrne's late withdrawal was due to nothing more than "cramp".

"Devin [Toner] took a bit of a knock at the end but he was getting some treatment but he was fine to continue for the last few minutes," said Cullen.

Jamison [Gibson-Park] had a bit of a roll on his ankle but I think he's okay."