Five people were shot and one killed in Baltimore on Tuesday evening in four separate incidents within a three-hour span, police said.

The rash of shootings comes on the heels of a violent weekend in which 20 people were shot — eight of them fatally — between Friday afternoon and Sunday night. Two other people were shot and wounded Monday. Top police officials have been appearing at some of the city's crime scenes to encourage residents to come forward with information.

A man and woman were both shot in the leg by unknown assailants about 6:30 p.m. in the 700 block of North Martin Luther King Jr. Boulevard in the Upton neighborhood, near a Wendy's restaurant. The shooters fled, police said. Police believe the incident was partially captured on video.

About 7:10 p.m., a male was shot in the leg near the intersection of Sinclair Lane and St. Lo Drive, next to the Clifton Park golf course in Northeast Baltimore, police said. His age was not given.

Shortly after 8 p.m., a man was shot, also in the leg, in the 2000 block of Northbourne Road, in the Perring Loch neighborhood of Northeast Baltimore, police said. Police said they believe the incident might be related to the earlier shooting near the intersection of Sinclair and St. Lo.

Before 9 p.m., another man was fatally shot near the intersection of Gwynns Falls Parkway and North Longwood Street, just south of Hanlon Park, police said. The man was shot multiple times, police said.

"These acts of violence are unacceptable, and those responsible will be held accountable for their actions," said Col. Garnell Green, the department's chief of patrol, who briefed the media late Tuesday. He said detectives are working "around the clock" to investigate.

"We have good leads in many of these cases and we expect arrests soon," Green said.

Police ask anyone with information on any shootings to call 1-866-7-LOCKUP.

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