A man was robbed at gunpoint Saturday night within two blocks of the Supreme Court. On the same night, another man awoke on a Metrobus to find a thief taking his CD player and its case from around his waist.

Both offenses occurred within about an hour at different ends of the Capitol Hill Historic District. In each case, D.C. police said arrests were made and property recovered.

In a third weekend incident in that area, a woman was sexually assaulted at knife point Sunday night, police said. An arrest was made in that case, too, they said.

The gunpoint robbery occurred about 9:20 p.m. in the 300 block of A Street NE, a block of rowhouses, trees and brick sidewalks. Police said three people, one armed, demanded the victim’s property, took items and fled.

Both D.C. and U.S. Capitol police arrived, and a description was sent over police radios. In the 600 block of Pennsylvania Avenue SE, D.C. officers spotted three people who seemed to fit the description.

After a brief foot chase, two arrests were made, police said. They said a gun was later found.

The bus incident occurred about 8:45 p.m. at 12th Street and Pennsylvania Avenue SE, D.C. police said. They said the thief got off about a block away. The victim got off too and called police, who made a quick arrest.

In the third incident, police said the woman was forced to the 700 block of 12th Street SE and attacked. The area is just inside the eastern boundary of the historic district. A man with no fixed address was quickly arrested, police said.