However, he stressed that responsibility for the attacks could not be attributed to the Taliban without evidence.
In an interview with the IRAF news agency published on Tuesday, Ardestani said the recurrence of such attacks and the possibility that they were connected raised concerns about Iran's national security. However, he said the incidents would not necessarily affect relations between Tehran and the Taliban.
He identified political motives, personal disputes and organised operations as possible explanations that security agencies should investigate.
The Iranian lawmaker said that if the attacks against influential figures from Afghanistan's former government were found to be part of a series of organised operations, the possibility of political motives would arise.
He also described the Taliban's possible involvement as one of the hypotheses worth examining, but emphasised that attributing the attacks to the group or any other organisation would require evidence and the findings of security investigations.
Referring to the recent assassination attempt against Ahmad Khan Ghori, the former head of Ghor Provincial Council, in Mashhad, Ardestani said a political motive was possible, but personal disputes and financial issues should also be investigated.
He added that if links between the attacks were established, their recurrence could indicate weaknesses within Iran's security agencies and create the impression that certain individuals were not adequately protected in the country.
According to Ardestani, identifying those responsible and investigating any potential networks should be priorities for the relevant authorities.
Previously, Marouf Ghulami, a former mujahideen commander and an associate of Mohammad Ismail Khan, was shot dead at his office on Mofatteh Street in Mashhad on 13 September 2025.
Sources close to Ismail Khan blamed the Taliban for the assassination, but Iranian officials did not comment publicly at the time on the perpetrators or their motives.
On 24 December 2025, General Ekramuddin Saree, the former police chief of Takhar province, and Mohammad Amin Almas, a former Afghan military officer, were killed in an armed attack in Tehran.
Responsibility for that attack has not officially been attributed to any individual or group.
The Iranian government has not released information about these killings or the findings of its investigations.