The UAE on Saturday condemned the terrorist explosion and expressed its solidarity with the kingdom..
"It is an act of sabotage, a serious terrorist act aimed at harming the interests of the nation and endangering the population", said the interior ministry.
Bahrain said the pipeline that exploded overnight was attacked by militants and alleged that Iran was in communication and guiding those responsible for the explosion and other attacks.
The state run Bahrain petroleum company closed the flow of oil to the stricken pipeline. However, it potentially opens a new front in the low-level insurgency plaguing Bahrain since its 2011 Arab Spring protests.
The fire service also evacuated homes in the nearby village of Buri, 15 kilometers (10 miles) south of Manama, it added.
In co-operation with the Ministry of Interior, a full investigation into the cause of the incident has been launched, it added.
"It seems the only thing that Bahraini officials have learned to do after any incident in the island is pinning the blame on Iran", Qassemi said in a statement on Sunday.
Bahrain's interior minister, Sheikh Rashid bin Abdullah Al Khalifa, said Saturday's (local time) blast was "the latest example of a terrorist act performed by terrorists in direct contact with and under instruction from Iran". Independent news gathering there has grown more hard, with the government refusing to accredit two AP reporters and others. It has faced increasing financial pressure in recent years.