Records of telephone calls by Washington Mayor Marion Barry have been subpoenaed by investigators seeking to determine whether Barry interfered with a police drug probe, sources said.

Barry, who denies having tried to disrupt the drug investigation, will himself be questioned about the matter, possibly this week, said the sources, who spoke on condition they not be identified.In a statement issued Wednesday, Barry said: "We welcome this investigation. The District government will cooperate fully . . . and will comply with any subpoenas the grand jury may issue."