MOSCOW (Sputnik) – Mateen’s Facebook accounts were taken down, so the messages could not be viewed by the public, however, investigators were able to uncover some of them, Senate Homeland Security Chairman Ron Johnson said on Wednesday.
"In the next few days you will see attacks from the Islamic state [Daesh] in the usa," one of Mateen’s messages said, according to Johnson.
On June 12, 29-year-old Omar Mateen opened fire in The Pulse, a gay nightclub in Orlando, Florida, killing 49 people and injuring 53 others. The FBI confirmed on Wednesday that the attack is being investigated as an act of terror.
Mateen’s father, Seddique Mateen, said his son did not have ties to the Daesh terrorist group, banned in a range of countries worldwide, according to CNN.
Mateen’s attack is the deadliest mass shooting in the history of the United States.