The suspect, a Palestinian who was illegally residing in Israel, was handed over to the Shin Bet for interrogation.
"A terrorist attack was carried out against the TUSAS facilities in Kahramankazan, Ankara. Unfortunately, we have martyrs and injured people," Interior Minister Ali Yerlikaya said on social media X.
The Shin Bet investigation of the terrorist began last month after he was arrested in his home a month ago.
Kadosh and his partner were supposed to get married next month, the association said.
Shooting terror attack on Highway 4 near Ashdod kills one, wounds several others to varying degrees, including one doctor.
This arrest came just one day after the suspect’s relative, Nasir Ahmad Tawhedi, was detained in Oklahoma for allegedly planning an ISIS-inspired attack on US Election Day.
The case was cleared for publication on Thursday following a covert investigation that lasted several weeks.
Five suspects had planned a combined attack involving a car bomb and shooting, targeting a crowded area in central Israel, including the Azrieli Towers.
Rabbi Fishoff was a resident of Hadera and a father of seven.
The defense establishment is on high alert with the upcoming Tishrei holidays.