US missionaries to stay in Haiti jail over weekend

* Two missionaries to be held until at least Tuesday

* Judge awaits testimony from Dominican witnesses

PORT-AU-PRINCE Feb 26 (Reuters) - Two U.S. missionaries will remain in jail in Haiti through at least Tuesday, while a judge takes testimony that is expected to clear them of child kidnapping charges, the judge hearing the case said on Friday.

Investigative judge Bernard Sainvil said that before freeing Laura Silsby and Charisa Coulter he wanted witnesses that he had already examined in the Dominican Republic to give their testimony in Haiti.

"The Americans will have to stay in jail while I hear those people ... the hearings will take place Monday and Tuesday, and they won't be released before I finish," Sainvil told Reuters.

"The people I met in the Dominican Republic all confirmed statements made previously ... by the Americans. The statements played in their favor," he added.

Sainvil said on Tuesday that Silsby and Coulter could be released this week.

They were among 10 Americans arrested on Jan. 29 on charges that they tried to take 33 Haitian children out of the country without proper documentation after the devastating Jan. 12 earthquake.

Eight were released last week, but Silsby, the group leader, and Coulter, her assistant, were held in detention for further questioning.

They have repeatedly denied any wrongdoing, saying they only wanted to help orphans left destitute by the quake.

But they had no Haitian identity or exit papers for the children. Many of the children had living parents who acknowledged turning them over to the missionaries in the belief they would have better care in the hands of the Americans.

Haitian President Rene Preval estimates the magnitude 7 earthquake killed about 300,000 people. (Reporting by Joseph Guyler Delva; editing by Tim Gaynor and Mohammad Zargham)