Doesn't sound like Baháʼí is Muslim. From Wiki:
The Baháʼí Faith is a relatively new and fast-growing religion founded in 1844 in Iran by Baháʼu'lláh.
Its central teachings are the oneness of God, the unity of all religions, and the unity of humanity.
The faith emphasizes principles like the equality of men and women, the elimination of prejudice, and world peace.
So OF COURSE the Musloids in Iran killed him.