The first blast occurred at 13:20 local time (0850 GMT), followed with gun battle.
Four Afghans were injured in the attack on the embassy compound, none
with life threatening injuries. They included three Afghan visa
applicants and one local contract guard, according to a statement posted
on the US embassy website.
Meantime, Afghan Interior Ministry admitted in a statement released
late evening that militants targeted four places in the capital city
Kabul on Tuesday which "had left seven people including four police and
three civilians dead."
Five suicide bombers have either been killed by security forces or died in their detonations, it added.
The situation has been brought under control, the statement
emphasized. However, it said that search operation is underway inside
the under-construction building in case any suicide bomber is hidden.
Meanwhile, Qari Yusuf Ahmadi who claims to speak for the Taliban
outfit in talks with media via telephone from unknown location claimed
responsibility for the attacks, adding a group of Taliban fighters
equipped with arms and suicide vests targeted the US embassy and
NATO-led forces headquarters inflicting huge casualties.
Afghan President Hamid Karzai termed the multiple attacks as coward terrorist act and strongly condemned it.
The process of taking over security charge by Afghan security forces
from over 140,000-strong NATO-led troops with nearly 100, 000 of
American, begun in last July, is scheduled to be completed by the end of
2014.