Iran's Guards says Saudi Arabia behind deadly attacks in Tehran: statement

"This terrorist attack happened only a week after the meeting between the U.S. president (Donald Trump) and the (Saudi) backward leaders who support terrorists. The fact that Islamic State has claimed responsibility proves that they were involved in the brutal attack," said the statement, published by Iranian media.

The attacks were the first claimed by the hardline Sunni Muslim militant group in the tightly controlled Shi'ite Muslim Iran.

(Writing by Parisa Hafezi; Editing by Janet Lawrence)