The man who carried out a suicide bombing which killed 27 members of Iran’s elite Revolutionary Guards near the border with Pakistan last week was Pakistani, a senior Revolutionary Guards commander said on Tuesday, according to the Tasnim news agency.

One other member of the militant cell that planned the attack was also a Pakistani citizen, the head of the Guards’ ground forces, Brigadier General Mohammad Pakpour said.

Iran has repeatedly blamed Pakistan for sheltering militants connected with attacks in the border area, although Tuesday’s remarks appear to be the first time Tehran has said Pakistani citizens were directly involved in the attack.

Read more: Reuters