President Donald Trump says he has his doubts about the strange syringe attack on Rep. Ilhan Omar Tuesday night … claiming she “probably” set the incident up herself!

We told you all about it — the Democratic congresswoman representing Minneapolis was squirted with an unknown liquid during a town hall in the city … and ABC News Senior Political Correspondent Rachel Scott says the prez told her afterward Omar is a “fraud” and “probably had herself sprayed, knowing her.”

Notably, he reportedly admitted he didn’t see the video of the attack … and he said “I hope I don’t have to bother,” according to Scott.

The crazed man who sprayed Omar with the liquid — Anthony Kazmierczak — was swiftly tackled to the ground by security, arrested and booked into Hennepin County Jail on suspicion of third-degree assault, according to police.

Omar carried on with her speech — it was her first town hall since Border Patrol agents shot and killed Alex Pretti over the weekend.

She took to X afterward to say she was doing just fine. She added … “I don’t let bullies win. Grateful to my incredible constituents who rallied behind me. Minnesota strong.”