His departure from WYPR was confirmed in an email by a newsroom staffer sent to colleagues at the station and elsewhere Monday. His last day was Friday.
Khalid and WYPR management both declined comment Wednesday.
Khalid, a former Baltimore Sun reporter, had been on probation in February for comments he posted on the Facebook page of a friend questioning the influence of Israel on American politics.
"I, for one, have had enough of this pandering before the Israeli regime," he wrote. "The war-mongering toward Iran has, once again, distracted the world from Israel's brutal military occupation of the West Bank, East Jerusalem and the Golan Heights."