Thai authorities, but allowed him to leave the country on Thursday on the condition he return following a concert appearance in Europe. Pletnev told reporters in Moscow that he will honor those terms.
"After the completion of my performance I intend to return there again and see this matter to its conclusion. I hope that Thai justice and the court system will be equal to the occasion." he said.
"I can say directly that I committed no kind of crime," he said.
"We expect him to come back (from his European music tour) given that he is famous and that he claims that he is innocent. And since he has hired a legal team, we expect him to come back to fight the case," Thai police Lt. Col. Omsin Sukkanka said.
Pletnev has said the charges were the result of a misunderstanding. Russian media reported that Pletnev planned to return to Thailand on July 18. He is scheduled to conduct in Ohrid, Macedonia, on July 12 and his next planned appearance is in August.
Pletnev was released on 300,000 baht ($9,000) bail following a court appearance in Pattaya on Tuesday and ordered to report to the court every 12 days. The court initially said he would not be allowed to leave the country but later reversed its decision, Omsin said.
The musician could face up to 20 years in jail and a fine of 40,000 baht ($1,200) if found guilty.
Pletnev founded the Russian National Orchestra, the country's first independent orchestra, and was its first principal conductor, according to the orchestra's website. Today, he is the artistic director.
The granting of bail to Pletnev and allowing him to leave the country while he faces such serious charges was unexpected, though not unprecedented. Both police and court officials declined to directly address the issue.
"Why the judge let (Pletnev) go is a question that has struck in many of our hearts. There are some questions that need to be answered," said Supagon Noja of the Child Protection and Development Center.
Thailand has long been known as a haven for sex tourists and pedophiles because of widespread prostitution and lax law enforcement. Authorities have voiced intentions to crack down on such offenses, and Pletnev's arrest is one of the most prominent cases to date.
Police said the musician was detained following a tip from Traipob Boonmasong, a Thai national who was charged with child rape for alleged involvement in a child prostitution ring. Police said they found photos of Pletnev in compromising situations with boys.
Omsin said evidence in the case included a statement from a 14-year-old boy who said Pletnev had raped him twice at Traipob's home.
"The boy said he had lived in Traipob's house for a year and was raped by Pletnev twice. The first time was in the middle of last year and the second early this year," Omsin said. He added Pletnev had appeared in some photographs with the alleged victim, but no suspicious activity was depicted.
Internationally known as a pianist, conductor and composer, Pletnev won a 2005 Grammy for an arrangement of Prokofiev's "Cinderella" which was recorded with him and Martha Argerich on piano.
Pletnev owns a restaurant and the Euro Club which includes a swimming pool and badminton courts in Pattaya, where he reportedly lives in a palatial compound.
The resort town is known for its raucous night life, playing host to foreign criminal gangs and police suspected of corruption. It is also a major destination for Russian tourists.
The newspaper Pattaya Daily News said Pletnev has lived in Thailand for the past 15 years. It quoted him as saying in an interview that Traipob helped care for his properties when he was on the road, and that he had no knowledge about the man's alleged involvement in a child-sex ring.