I have asked our Embassy in Ankara, which is accredited to Pakistan, to make enquiries about this matter.
It appears that the individual in question is not an Irish citizen and therefore the Embassy could not provide consular assistance and no such assistance has been requested.
However, the Embassy will make further enquiries in liaison with the EU Delegation in Islamabad. Although the whereabouts of this individual are unknown, Ireland would expect that Pakistan will comply with its international human rights obligations, including under the International Covenant on Civil and Political Rights.