A tractor slammed into a bus in Jerusalem at around 1:40 pm Monday in a terrorist attack, killing one person and injuring six others. 

There were no passengers on the bus at the time, but the driver was among the casualties, suffering light injuries after it overturned from the impact. Four of the injured have been taken to Hadassah Hospital at Mount Scopus for treatment and one was taken to Sha'arei Tzedek Medical Center. 

A 25-year-old man, a hareidi kollel student, has been killed, after Magen David Adom (MDA) medics declared him dead at the scene.

He was later identified as Rabbi Avraham Walles, 29, of the Toldot Aharon hassidic stream, from Me'ah She'arim in Jerusalem. He was a supervisor at the construction site next to the site of the attack.

The attack occurred on Zachs and Shmuel HaNavi street near the traffic circle outside the Zvill Beit Medrash and one block from the Olive Tree Hotel. Witnesses there reported that the tractor driver rammed a bus and that the event did not seem like an accident. 

"I saw a large tractor slam into a bus going to Beitar Illit; there were several injuries treated by United Hatzalah," said United Hatzalah representative Shraga Hoffman, who was at the scene. "The bus is on its side. The greatest miracle is that this is the first stop of the route so it [the bus] was relatively empty of passengers."

A policeman shot the tractor driver and killed him, stopping the attack and likely preventing further casualties.

Palestinian sources are claiming the terrorist's name as 19-year old Muhammed Na'if al-Ja’abis from the Jerusalem neighborhood of Jabel Mukaber, although this has not yet been confirmed by police.

Jerusalem mayor Nir Barkat has now made a statement, according to Yediot Aharonot, urging residents not to take the law into their own hands as the police investigate the attack.

"The event is behind us now; the police have launched an investigation," Barkat stated. "Unfortunately we have injuries, but given the circumstances it could have been much worse, and we must thank the Jerusalem Police for acting."

"I ask all residents to maintain vigilance because such a thing can happen anywhere in the country," he continued - adding a warning, however, not to take the law into their own hands. 

Watch: Police shoot dead Jerusalem "tractor terrorist":

Footage shows tractor overturning bus:

"A police officer at the scene stopped his car, got out, neutralized the terrorist and thus prevented a further attack," the Jerusalem Police Spokesperson's Office stated shortly after the attack. 

Footage taken from the scene captured the immediate aftermath of the attack:

Arab extremists have used tractors or other heavy diggers to commit terrorist attacks in Jerusalem on several occasions. The last incident occurred late last year, when a terrorist was killed trying to ram his way into an army base just north of the capital.

Three similar attacks were carried out in 2008 and 2009, including one (seen below) in which a terrorist flipped a police car before being shot dead.