Abdollah Behbahani ( Persian : سیدعبدالله بهبهانی , 1840–1910) was a Shi'a theologian and a prominent leader of the constitutional movement . He was born in Najaf and was educated by scholars such as Morteza Ansari . During the constitutional movement he was influential in the Majlis . On the night of 15 July 1910, four gunmen attacked his house and killed him. Seyyed Hassan Taghizadeh was suspected to be responsible, and he subsequently fled the country.