MOSCOW, February 19 - RAPSI. The Texas Child Protective Services (CPS) is investigating the death of three-year-old adopted Russian boy Maxim Kuzmin, a CPS representative told RIA Novosti in Washington on Monday.

"A typical investigation is completed in about 30 days, but can take longer if law enforcement is involved (in this case, the Ector County Sheriff's Department, in Odessa, Texas, is investigating)," the CPS official said.

"In this particular case, the allegations reported to CPS were physical abuse and neglectful supervision, or simply, neglect," the CPS representative said. "At the conclusion of an investigation, CPS will either confirm a finding, rule out a finding, or it will classify it as undetermined."

Russian Children's Rights Commissioner Pavel Astakhov has written in his blog that the adoptive mother gave the boy, renamed Max Alan Shatto after adoption, strong psychotropic medication before beating him to death.

Russia's Investigative Committee is investigating the incident.

The Russian authorities have said that the Texan prosecutors have expressed readiness to cooperate in investigating the death.

The US State Department will "assist the Russian Embassy and consulate officials in making contact with the appropriate authorities in Texas" in connection with the death of Maxim Kuzmin, State Department spokesperson Victoria Nuland said. Alan and Laura Shatto, Maxim Kuzmin's adopted parents, also have a two-year-old boy, another child adopted from Russia.