Alexandria police have searched an apartment in the city's Old Town section in an investigation into child pornography that they are pursuing with police in California and two other states.

"The Alexandria police are assisting the Los Angeles police in the child pornography case," said Alexandria's Commonwealth's Attorney John E. Kloch yesterday.

Kloch said police seized property during the search but he declined to say what had been confiscated. Kloch said the investigation is still open and no arrest warrants have been issued in Alexandria.

In an affidavit in support of the search warrant request, filed in Alexandria Circuit Court, Alexandria police investigator Ray Snuffer said investigators had reason to believe that the search of the Old Town residence would produce sexually explicit photographs of children; letters, correspondence and other written accounts of sexual activity; movies, magazines or other material depicting or describing sexual activity, and other sexual paraphernalia.

Another affidavit, signed by Los Angeles Detective William H. Dworin, described how, using an alias, he corresponded with a resident at the Old Town address and that sexually explicit photographs of children were sent to him.

Meanwhile, police in Albuquerque said yesterday they had seized about 2,000 video cassettes, video equipment and printed material from a house there Thursday in connection with the child pornography investigation.

Albuquerque authorities said they received "lead information" on the local case Thursday from Los Angeles-area authorities, who were about to execute arrest and search warrants at the home of a Long Beach man.

Sgt. Cliff Jenkins in Albuquerque said after the California search warrant was executed, the search was conducted at the residence in Old Town Alexandria.

He said the child-pornography investigation began in Seattle, where a search warrant was executed in May.

Jenkins said possession of child pornography material is not a violation of the law, but he said the production and distribution of such material is illegal.