Agents of the Israeli Shin Bet security service overnight Saturday arrested several suspects in last month’s arson attack on the Church of the Multiplication in Tabgha in the Galilee, The Times of Israel reported.

The arrests came following “a covert, strenuous and professional investigation that began right after the church was torched,” the Shin Bet said in a statement.

Details of the arrests, including the number of suspects and their place of residence, are under a court-imposed gag order. The suspects were being questioned by the Shin Bet.

“Several Jewish suspects have been arrested for the burning of the church and the Nazareth court has decided to extend their detention for the purposes of the investigation,” police spokeswoman Luba Samri said in a statement of the overnight arrests.

The suspects will appear in Nazareth Magistrate’s Court on Sunday for a remand hearing, Israel Radio said. Police are seeking a remand extension.