Interpol on Sunday offered to send experts to investigate a deadly attack on a Nairobi shopping mall as well as help in arresting suspects.
The assault on the part Israeli-owned complex has claimed at least 59 lives and left some 200 wounded.
The organisation based in Lyon, France, said it had "offered to deploy an Incident Response Team consisting of specialised forensic officers, counter-terrorism experts, operational assistants and analysts."
It could "alert law enforcement around the world about the modus operandi behind the attacks... (or) seek the arrest of those wanted in connection with the incident," a statement said.
"Any fingerprint and DNA evidence can also be compared against Interpol's global databases," the statement said.
Interpol Secretary General Ronald Noble said it was the sort of strike called for recently by Al-Qaeda chief Ayman al-Zawahiri.
"The question for every country's law enforcement and security agency is: 'Could this kind of terrorist attack have occurred in our country?' The answer is a sobering 'Yes'," Noble said.
Zawahiri, in a speech marking the 12th anniversary of the 9/11 attacks, had vowed to "bleed America economically" by making it spend more money on security.
"And keeping America in tension and anticipation only costs a few disparate attacks here and there," he said.
Somalia's Al Qaeda-linked Shebab rebels have claimed responsibility for Saturday's strike on the Westgate shopping centre.