The US diplomat was allowed to return to the US after the Islamabad High Court's decision

Islamabad: Pakistan has allowed a US diplomat involved in a fatal traffic accident to leave the country, an official said Tuesday, following a weeks-long stand-off and street protests over the incident.

The diplomat -- described as the defence attache in an earlier report -- departed Islamabad late Monday, a senior Pakistani government official told AFP on condition of anonymity.

After months of negotiations, a Pakistani court eventually freed Davis following the payment of $2 million to the families of the dead men.