Dozens of National Security officers transferred the weapons to warehouses across the West Bank, the source said.
The source could not say where the funding for the equipment came from, but mentioned that nine more trucks were expected to arrive in Jericho over the next few days carrying bullet proof vests and additional equipment.
It is still unclear whether the delivery of the weapons was meant to strengthen the Palestinian security forces or for a possible transfer of responsibility of other Palestinian cities to the PA, the source said.
It was recently reported in Arab media that Qalqilya and Jericho would be the first cities to be transferred to the PA in the frame of a three-step plan being drafted by Israel and the PA.
Palestinian sources said that that weapon transfer and the training of the security forces would continue over the next few days.