The fatal shooting during Saturday, which involved an off-duty police officer, resulted in the death of Jaffa resident and MDA volunteer Yaakov Tukhi.
The shooting is reported to be due to a conflict between families, and left one dead and several injured, including a toddler who was evacuated to the Galilee Medical Center.
Avitan arrived in Malaysia from the United Arab Emirates on March 12 on a French passport, police said. He was detained by police at a Kuala Lumpur hotel with a bag containing the weapons.
A separate bill setting out large fines for citizens who fail to abide by mobilization rules was also passed at the first reading.
A shooter in Nazareth targets family members before committing suicide, leaving three dead and others injured. Police view it as a family conflict, not criminal activity.
18-year-old Tekah was shot and killed by an off-duty police officer while in a grove in Kiryat Haim in June of 2019.
Israeli media reported on Saturday that Avitan was an associate of an Israeli criminal syndicate who had been en route to assassinate a member of a rival crime family.
A similar offense occurred in April 2023, where three Bedouin residents from Laqiya were arrested for attempted kidnapping and assault of a resident of Kiryat Malakhi.
"It deserves to be in the right hands, presented to the whole public, and not be the private property of one criminal or another," Inspector Nidal Abdelhalim said.
Jerusalem District Court ordered Andres Roemer to be placed under house arrest with an electronic ankle bracelet while awaiting extradition.