Mohammad Amir, one of three Pakistani cricketers jailed in England for spot-fixing, has been released, a person with knowledge of the situation says.

The person says the 19-year-old fast bowler was released from a young offenders’ institution on Wednesday halfway through his six-month sentence because of good behaviour.

Former Pakistan captain Salman Butt and bowler Mohammad Asif are still serving their sentences after being convicted of fixing part of a test against England in August 2010.

Amir pleaded guilty before the trial at London’s Southwark Crown Court last year.