The attack was the deadliest in Britain since 2005 when four Islamist suicide bombers attacked London's transport system, killing 52 people. The Times didn't say where it got the information.
Twenty-two people were killed in Monday's attack at the Manchester Arena, when a 22-year-old man detonated an explosive device shortly after an Ariana Grande concert.
Two men were arrested by police in Greater Manchester overnight on Thursday, bringing the number in United Kingdom custody to eight.
"These searches will take several days to complete, as you would expect. However, it is very important that we continue with these searches".
In Libya, bin Salem said Abedi's mother told investigators her son had left for the United Kingdom four days before the attack after spending a month in Libya.
British police are seeking to control the flow of information to protect the operation, Home Secretary Amber Rudd told BBC Radio 4's "Today" program, CNN reported. May will tell fellow North Atlantic Treaty Organisation members that the alliance should formally commit itself to the coalition fighting Islamic State in Iraq and Syria.
"That incident stirred up a sense of anger among young Libyans in Manchester and especially Salman, who clearly expressed his desire for revenge", he said.
Authorities in Britain have become increasingly angered by US leaks from the investigation, including the bomber's name on Tuesday and the photos of blood-stained fragments from the bomb on Wednesday. Hafidah was close with Salman Abedi's brother Hashem. "I thought he worked in a takeaway or something" because of his late hours, Kinsey said. "Some of the kids there were very upset about it, and that is how it started".
Abedi is now a manager of the Central Security force in Tripoli. "Humanitarian reasons, plus I want Russian Federation to greatly step up their fight against ISIS & terrorism", he wrote on Twitter.
Ramadan Abedi fled Tripoli in 1993 after Muammar Gaddafi's security authorities issued an arrest warrant.
But he said there were still "gaps in our understanding" of the plot, as investigators probed Abedi's potential links to terrorists in Britain, Europe, Libya and the Middle East. Neighbors recalled him as tall, thin and quiet, and said he often wore traditional Islamic dress.
It emerged on Wednesday that the 22-year-old was known "up to a point" to the intelligence services and had recently returned from Libya.
Neighbors in Fallowfield, the south Manchester suburb where Abedi lived, recalled a tall, thin young man who often wore traditional Islamic dress.
"There was definitely nothing too apparent or obvious", Fadl said.
One woman who was earlier taken into custody has been released. "He would be the flawless mule for ISIS", he added.
Queen Elizabeth II visited Royal Manchester Children's Hospital, telling 14-year-old Evie Mills and her parents: "It's awful".
For a second night, a throng of people filled a Manchester square for a vigil for the victims. They laid flowers, stuffed toys and cards of condolence on a flowing makeshift altar. People continued to stand together around the flowers for another 20 minutes or so after the vigil had ended.
The bombing came just over two weeks before a snap general election set for June 8.
A rift between the Trump administration and U.S. security services contributed to a series of leaks by American officials about the Manchester bombing, British officials believe. But leaks from the investigation were creating a trans-Atlantic diplomatic mess.