Israeli authorities say they have arrested five East Jerusalem men who were plotting a shooting attack similar to one in 2008 that killed eight yeshiva students.

The plot was financed by Hamas, which helped supply weapons, the Shin Bet said. That includes money transfers to buy an M-16 rifle, handguns and explosives. All five suspects reportedly have relatives in Hamas.

One of the conspirators built a pipe bomb that he intended to plant at a bus stop. But when one of his accomplices was arrested, he ditched the bomb in a trash bag let on a roadside. It detonated when a city worker went to pick it up, maiming him.

In March 2008, a gunman opened fire inside the Mercaz Harav yeshiva in Jerusalem, killing eight students and wounding nine more.

The arrests began in February, but details about the case were kept sealed until Thursday when the suspects appeared in court.

Also Thursday, two people were injured – including a 16-year-old in critical condition – when an anti-tank missile fired from Gaza hit an Israeli school bus. Israel retaliated by bombing Hamas targets in Gaza