A spate of robberies in the District continued into Sunday with D.C. police reporting more than 20 weekend incidents around the city as hundreds of thousands of visitors descended on the region for Inauguration Day.

The reported robberies were scattered throughout the District, and authorities said the assailants were believed to have used both guns and knives. In most cases, police posted only vague descriptions of the culprits.

D.C. Mayor Vincent Gray told The Washington Examiner that authorities did not believe the sudden surge was linked to the inaugural festivities.

"If it's not in the downtown area, it's hard to tie it to the inaugural, unless people think that all the police are deployed and got their attention somewhere else," Gray said. "But I just don't believe criminals who would do this would think it through to that point."

Last year, the District recorded a January jump in robberies, though the total number of robberies in 2012 was ultimately similar to the city's figures for previous years.

Along with the weekend robberies, police said they were also investigating an armed carjacking that took place on the 4500 block of Benning Road in Northeast Washington.

-- Alan Blinder