Emergency services were still scrambling Wednesday to deal with the aftermath of a bomb that exploded at a crowded bus stop outside the International Convention Center in Jerusalem. One woman was killed and more than 30 people were wounded in the incident, three of them seriously.

"We didn't wait even for a second, we just got up and ran to the bus station. I saw two women lying on the ground, unconscious and covered in blood," a medic, Motti Bukchi, told Channel Two.

"I can't say what sort of injuries they suffered. They were completely covered in blood."

The paramedic said he had been meeting colleagues in an office nearby to discuss the dispatch of a medical team to disaster-hit Japan when they heard the explosion.

An eyewitness in the area at the time of the explosion told Haaretz that she heard a loud blast close to the central bus station and second later sirens began to wail and security forces rushed to the scene.

"I was on the number 6 bus," a witness at the scene of the bombing told Army Radio, "We saw a serious blast. It sounded like there was a lot of explosive material and we saw people running." She added that "the major damage was to the front of the bus."

Meir Hagid, one of the bus drivers, said he heard a loud explosion as he drove by the site, located near the main entrance to Jerusalem and its central bus station.

"I heard the explosion in the bus stop," he said. He halted his vehicle and people got off. He said nobody in his bus was hurt.

Uri Schechter, the CEO of the Jerusalem central bus station told Army Radio that several security drills were carried out recently at the bus station, but no specific threats had been reported.

Eli Pollack, vice president of Hotzolah Emergency Services, told Army Radio that dozens of volunteers were sent to assist with those injured in the attack.

"We saw windows smashed in," said Pollack, "there were injured people both inside and outside the bus. Many of our people are still at the scene of the attack and the police are checking all cars to make sure they are not carrying explosives. We are currently looking for additional people suffering from shock."

"This is a very serious incident," Eli Ben, the CEO of Magen David Adom emergency services in Jerusalem told Channel 10. "As soon as we heard the blast number of emergency teams arrived at the scene," he said.

The CEO continued, saying that they found "roughly 20 injured that were suffering from trauma, some of them moderately to critically wounded by shrapnel. One of those injured was brought into the trauma ward unconscious and suffering serious injuries in his upper body."