A 31-year-old Washington lawyer has been arrested by Arlington police and charged with engaging in sex acts with two youths he had been appointed to represent in D.C. Superior Court.

A D.C. Bar Association committee asked a court panel yesterday to suspend the law license of Roger H. Moore, who maintains an office at 1511 K St. NW, pending the outcome of the charges against him.

The suspension request was placed before a three-judge disciplinary panel of the D.C. Court of Appeals. It came after Arlington police testified before the bar committee that Moore had engaged in five sex acts with the teen-agers at his North Arlington home.

Moore, a graduate of the George Washington University Law School and a member of the D.C. Bar since 1974, declined comment on the charges. His lawyer, Thomas J. Harrigan, called the accusations "absolutely ridiculous" and said, "We absolutely deny them."

Moore, who was indicted by an Arlington grand jury Monday on five counts of sodomy, is free on $1,000 bond. He is scheduled to be arraigned tomorrow in Arlington Circuit Court.

According to papers filed in the case, the investigation began last month after Moore called police to his home in the Lee Heights section of Arlington to report a burglary.

Three plice officers then apprehended a 16-year-old Washington youth near Moore's house and charged him with the burglary, according to police spokesman Tom Bell. Moore told the officers that he has been appointed to represent the youth and had invited him to his home to discuss the case, according to a police affidavit.

The youth told the investigators that he had been invited to the house on four occasions and that he had engaged in sex acts with Moore during the visits, the affidavit said. Police said in the affidavit that the youth accused the lawyer of giving him marijuana, the tranquilizer Valium, liquor and money.

Bell said the burglary charge against the youth was dismissed after Moore, citing his Fifth Amendment right against self-incrimination, declined to testify against the youth.

Officers said in the affidavit that they gave a polygraph test to the first youth and, earlier this month, located a second youth who made similiar charges against the lawyer.

The second youth, age 15, told police that last August he went to the lawyer's home to mow the lawn, according to the affidavit. The youth said Moore suggested they have sex and they did, the affidavit said.

On another occasion, the youth said the two met at Moore's K Street office and that Moore performed an act of oral sodomy on him after the other employes had left the office, according to the affidavit.

Arlington police spokesman Bell said yesterday that both District and Arlington investigators are continuing their probe of the lawyer.

The police affidavit was filed in connection with a search officers conducted Friday of Moore's home at 2242 N. Columbus St. Officers said they seized Valium, magazines depicting child pornography, a switchblade knife, and other items.