Adding to the speculation surrounding his status, President Masoud Pezeshkian acknowledged in a state TV interview that direct interaction with Khamenei is currently "very difficult."
Mojtaba has not appeared in public since his appointment in early March. The late supreme leader's other three sons, Masoud, Mostafa and Meysam, all attended the service.
Mojtaba Khamenei's representative in India, Ayatollah Hakim Elahi, attributed the decision to Israeli threats and surveillance risks that would make public attendance dangerous.
New Supreme Leader remains in hiding with severe burns and limb injuries after February airstrike; Revolutionary Guard commanders emerge as dominant decision-makers in ‘board of directors’ governance