US authorities have asked Interpol to provide any information its members around the world might have on bombs similar to the ones used in the Boston Marathon attack, the international police organisation said Saturday.
"Interpol has issued an international security alert, or Orange Notice, detailing the features of the improvised explosive devices used in the Boston marathon bombings to assist law enforcement across its 190 member countries detect any similarly configured bombs," it said in a statement.
The alert included photos of the bombs and fingerprints of the two suspects in the case: 19-year-old Dzhokar Tsarnaev and his brother Tamerlan Tsarnaev, 26. Both were ethnic Chechens living in the United States for more than a decade.
Interpol's notice to its members was issued after Tamerlan Tsarnaev was killed in a shoot-out with police but before Dzhokar Tsarnaev was captured after a day-long dragnet Friday in a Boston suburb.
The request appeared to be an effort by the FBI to determine if the type of bombs used Monday at the Boston Marathon -- home-made explosive devices using pressure-cooker pots to contain explosives and shrapnel -- were linked to any groups or attacks in other countries.
The motive behind the Boston marathon bombings is not yet known. The attack -- the worst in the United States since the September 11, 2011 atrocities -- killed three people and wounded about 180.
Interpol secretary general Ronald Noble said in the statement that the alert "will enable police services and other law enforcement agencies around the world to advise US law enforcement authorities whether they've come across similarly designed devices in their own investigations".