A Russian SU-27 aircraft executed a barrel roll maneuver near a U.S. Air Force reconnaissance plane over the Baltic Sea CNN’s Barbara Starr reports.

Two US defense officials claim that a Russian jet performed a “barrel roll” within 100 ft. of a US Air Force RC-135 spy plane, according to the Telegraph.

Russian Defense Ministry spokesperson Igor Konashenkov denied similar allegations from a separate incident earlier this month.

“The reports of foreign media saying that a Russian Su-27 allegedly flew in dangerously close proximity to a US RC-135 reconnaissance aircraft in the skies over the Baltic Sea on April 14 are not true,” he told reporters.