D.C. police have announced arrests in 17 robberies across the city. Most of the robberies occurred in October, but some date back to August. They include holdups of stores, carjackings and street robberies at gunpoint.

In one case, police said, a man was robbed on Oct. 19 while sitting in his 2004 Mercedes Benz in the 1500 block of C Street NE. Police said the suspect took the man’s cell phone and money, and then took his car. The suspect was arrested after a brief chase.

On Aug. 12, police said a person was being followed in the 100 block of 14th Street SE, and was suddenly hit in the head with a baseball bat. While on the ground, police said, the person was hit repeatedly and robbed of money, a cell phone and a Kindle tablet. About 20 minutes later, police said, a woman riding a bicycle in the 2500 block of 11th Street NW was knocked off her bike, also by a person with a baseball bat, who tried to take her purse. Police said they arrested a 25-year-old man in both attacks.

On Oct. 17, police said, two men distracted a pizza delivery man while a third snatched the pie from his hands in the 5900 block of 14th Street NW. Police arrested three suspects in the case.

On Oct. 21, a juvenile was arrested and charged with stealing a car at gunpoint from a woman in the 700 block of Longfellow Street NW.

And on Oct. 22, police said, a man with a gun robbed a person in the 1300 block of Tuckerman Street NW, and took a cell phone. The man is also suspected in several other robberies in Northwest, police said.

Here is a complete list of the robbery arrests from D.C. police.

Watch videos of recent robberies.