First blast at Jerusalem entrance * Second at Ramot Junction * Bombs detonated remotely, filled with nails

Jerusalem was hit by two explosions on Wednesday morning, in what is being treated as a joint terrorist attack, killing 15-year-old Aryeh Shechopak, a Canadian national and resident of Har Nof and wounding 18, with three in critical condition.

Aryeh, z'l, H'yd, was waiting for a bus to his yeshiva Wednesday morning when a bomb exploded next to the bus stop, fatally injuring him.

United Hatzalah volunteers provided initial treatment to a person who was critically injured and numerous people who sustained moderate to serious injuries on Weizman Boulevard at the entrance to Jerusalem.

United Hatzalah volunteer EMT Yosef Gabai, who arrived first at the scene to provide initial treatment, relayed: "I was waiting at the traffic light and I heard an explosion at the bus station. I arrived within mere seconds at the scene and I found a young man who was critically injured. I provided him with initial treatment and reported to United Hatzalah's Dispatch and Command Center to request additional responders be sent to the area. At the scene, I saw three more injured people, who were conscious and sustained various degrees of injuries."

United Hatzalah volunteer EMT Michael Groscott added: "I arrived at the scene to assist the injured. After I provided them with initial treatment at the scene they were evacuated to Hadassa Ein Kerem and Shaarei Zedek hospitals with cuts and other injuries."

Due to the nature of the incident, the Psychotrauma and Crisis Response Unit has been dispatched and is treating numerous eyewitnesses for emotional and psychological shock.

Following the incident at the entrance to Jerusalem, a second explosion took place at a bus stop by the Ramot junction.

United Hatzalah EMTs Dani Shmueli and Yossi Eisenstein relayed: "While driving in the area on our emergency 'ambucycles' we heard the explosion which happened at a bus stop. We arrived within mere seconds at the scene and provided assistance to three people who sustained light injuries from shrapnel. A United Hatzalah ambulance evacuated one of the injured to the hospital. United Hatzalah's Psychotrauma and Crisis Response Unit has also been dispatched and is treating numerous eyewitnesses for emotional and psychological shock."