Palestinian police officers traded gunfire with militants during an overnight raid into the Jabaliya refugee camp in northern Gaza, near the site of the bombing on Wednesday, according to Palestinian security officials and residents in the area. At least six suspects were taken into custody, officials said.…

"I am 100 percent certain that we will be able, in the next few days, to find those who planned and committed this attack," Jibril Rajoub, a senior Palestinian security official, told Israel Radio. "We will investigate everyone we need to investigate."

http://www.nytimes.com/2003/10/17/international/middleeast/17MIDE.html