BEIRUT — A bomb blast rocked the western part of the Lebanese capital late on Sunday, with the interior minister saying the target was a major bank.

An AFP correspondent saw almost all the entire glass facade of the headquarters of BLOM BANK, one of the country’s largest, blown out, with debris littering the ground.

Interior Minister Nuhad Mashnuq said a bomb containing about 3-4 kilos  of explosives had been "placed behind the back wall of BLOM BANK".

"It is clear that the bank was the target," he said.

Mashnuq gave no further details, but in comments to LBCI television channel he said the blast was "different" from other explosions that have occurred in Lebanon over the past few years.

Veteran Druze politician Walid Jumblatt linked the bombing to a law voted in December by the US Congress to impose sanctions on banks that deal with the Shiite movement Hezbollah.

In May, Lebanon’s central bank instructed the country’s banks and financial institutions to comply with the US law.

Hezbollah’s parliamentary bloc warned at the time that the move could push Lebanon towards bankruptcy.

"We have entered a cycle of attacks," Jumblatt told LBC television, and called for a "roadmap between Hezbollah and (Lebanese) banks" to ease tensions.

Jumblatt also told the Arabic-language newspaper An-Nahar that he had "issued a call for a calm dialogue concerning the American sanctions... but some are refusing that."

The blast "is a blow aimed against the economy and the banking sector," he told An-Nahar.

Washington has labelled Hezbollah a global terrorist group since 1995, accusing it of a long list of attacks including the bombing of the US Embassy and Marine barracks in Lebanon in 1983.

BLOM BANK director general Saad al-Azhari told reporters that no threats had been received by the bank ahead of Sunday’s blast.

A civil defence official said one person had been lightly wounded in the attack.

Twin bombings in the densely populated neighbourhood of Burj al-Barajneh in November last year killed 44 people. They were claimed by the Islamic State jihadist group.

Burj al-Barajneh is in the southern suburbs of Beirut, where the Hezbollah group holds sway. — AFP