DURHAM, N.C. (AP) -- Two Duke University lacrosse players were arrested early Tuesday on charges of raping and kidnapping a stripper hired to dance at an off-campus party, and the district attorney said he hopes to charge a third person soon. The indictments, unsealed Tuesday, did not indicate what possible evidence or arguments led the grand jury Monday to indict Reade Seligmann and Collin Finnerty, both 20. District Attorney Mike Nifong would not discuss the evidence. "It had been my hope to charge all three of the assailants at the same time, but the evidence available to me at this moment does not permit that," Nifong said. "Investigation into the identity of the third assailant will continue in the hope that he can also be identified with certainty." Seligmann posted a $400,000 bond shortly after his arrest, and his attorney waived his court appearance. Finnerty, who posting the same amount later Tuesday, made a brief appearance in Superior Court wearing a jacket and tie. The next court appearance for both players was set for May 15. Both Seligmann, a 6-foot-1 sophomore from Essex Fells, N.J., and Finnerty, a 6-foot-3 sophomore from Garden City, N.Y., were in handcuffs when they stepped out of a police cruiser before dawn. Seligmann is "absolutely innocent," said his attorney, Kirk Osborn. "He's doing great. That's all I have to say." Asked what led to the indictments, Osborn said: "Apparently it was a photographic identification. And we all know how reliable that is." Finnerty's attorney, Bill Cotter, said, "We're surprised that anybody got indicted, quite frankly." "The next jury will hear the entire story, which includes our evidence, and we're confident that these young men will be found to be innocent," he said. Calls to the Finnerty and Seligmann homes Tuesday morning were not immediately returned. No one answered the door at the Finnerty house, which sits in a cul-de-sac of million-dollar homes on Long Island. A lacrosse net and equipment could be seen in the yard, which abuts a golf course. Shortly after the allegations surfaced last month, Seligmann's father, Philip Seligmann, spoke to The New York Times about the allegations involving the team, saying, "It's unfortunate, but it will all be resolved positively very shortly." The alleged victim, a 27-year-old black woman and mother of two children, told police she was attacked March 13 by three white men in a bathroom at a party held by the lacrosse team. The racially charged allegations have led to near daily protest rallies. The school canceled the highly ranked team's season and accepted the resignation of coach Mike Pressler after the release of a vulgar and graphic e-mail that was sent by a team member shortly after the alleged assault. Defense attorneys have urged Nifong to drop the case, saying DNA tests failed to connect any of the 46 team members tested to the alleged victim. But Nifong has argued that he has enough evidence to proceed. He has said 75 percent to 80 percent of rape prosecutions lack DNA evidence. According to court records, a medical examination of the woman found injuries consistent with rape. Defense attorneys have said time-stamped photos taken the night of the party show that the alleged victim was injured and impaired before she arrived. Nifong has declined to discuss the case. School officials said Monday that the lacrosse coach was warned last year that his players had too many violations of the campus judicial code and he needed to "get them in line." Duke athletic director Joe Alleva said the university's executive vice president reviewed the lacrosse team's disciplinary record last year, then discussed his findings with Alleva. "He said there were too many incidents, but there's not enough incidents to make a drastic change in the program at this point in time," Alleva told The Herald-Sun of Durham. Alleva told the coach "his team was under the microscope, and he had to do everything he could to get them in line and to not have any more behavior problems." The review by Duke's executive vice president was spurred by reports of "boorish behavior" by the lacrosse team, Alleva said. Sue Wasiolek, Duke's dean of students and assistant vice president for student affairs, said the review showed the lacrosse team had a "disproportionate" number of violations of the campus judicial code. None was particularly serious, but administrators were concerned about the cumulative record and the fact that some players had several violations, she said. Neither Seligmann and Finnerty were among the Duke team members arrested over the past few years for misdemeanors including underage drinking and public urination. Finnerty, however, was arrested in November in Washington, D.C., and charged with simple assault after a man named Jeffrey Bloxgom told police the lacrosse player and two of his high school