MELBOURNE: Pakistan left-arm pacer Mohammad Amir was helped off the field after appearing to seriously injure his knee during the first Test against Australia.

With Australia at 220 for the loss of three wickets, batsman Peter Handscomb pulled a ball from pacer Wahab Riaz down towards fine-leg where Amir was fielding, with the fast-bowler appearing to twist his leg in an awkward manner after misfielding.

Team members and the physio went to the 24-year-old’s aid before he was helped from the field by the medical staff. However, he later returned to bowl during the third session of the day’s play.

Amir had taken the first wicket of the day, trapping David Warner for leg-before, and had the figures of 22-1 from 13 overs.