Updated

A tourist from Hawaii has pleaded guilty to punching two London police officers outside Buckingham Palace.

A prosecutor says 36-year-old Ryan Robinson of Kahekili Highway asked the armed officers, "Do you know any jokes?" before punching one in the face and trying to grab his Taser on Wednesday.

When the second officer pointed his gun at Robinson and ordered him to stand still, Robinson knocked him to the ground.

Prosecutor Henry Fitch said Friday that Robinson was heavily intoxicated and it took several other officers to restrain him.

Robinson, who appeared in court with a dirty shirt and bruised eye, admitted two counts of assaulting a police officer. A judge at Westminster Magistrates' Court gave him an eight-week suspended sentence and ordered him to pay each victim 200 pounds ($280).