His younger brother, Hashim Ramadan Abu Qassem al-Abedi — detained in Libya in the aftermath of the bombing — knew of his brother’s movements and about the plot, Ahmed Ben Salem, spokesman for the Special Deterrence Force in Tripoli, told the private broadcaster Libya’s Channel on Thursday night.

The brothers spoke on the phone just minutes before the attack, Ben Salem said, but Hashim told his Libyan questioners that he did not know details about where and when the blast would be.