Two devotees died from a heart attack during Biswa Ijtema being held on the bank of the Turag River, at Tongi, on the outskirts of capital Dhaka.Among them, two devotees died of heart attack on the Biswa Ijtema grounds on early Friday.They were Nurul Islam (72) of Kurigram district and Joinal Abedin (55) of Sylhet.Earlier, a Farid Uddin (72) of Natore district died on Thursday evening.Three dead bodies were handed with their relatives, it is learnt.