SOUTH BEND — From the far west side of the city to the River Park neighborhood, police spent much of their Sunday morning going from one crime scene to another. After five shootings in four hours, neighbors are worried about what will happen next.

"It definitely concerns us because it doesn't seem like a lot of it [was] going on here until this year," Bryan Woodward told WSBT, after finding out a person had been shot near his home.

IU South Bend student Matthew Lopez said he didn't hear gunshots near his home. But two of Sunday morning's shootings happened blocks from where he lives.

At 2 a.m. Sunday a man was shot at Mishawaka Ave. and 21st St. Then around 2:25 a.m., police say another man was shot near the intersection of Mishawaka Ave. and Ironwood Rd.

"I've heard gunshots in the past," said Matthew Lopez. "They seem to be further away."

Crime scene tape still dangles at the Taco Bell on Bendix and Lincoln Way West where a 16-year-old boy was shot around 2:15 Sunday morning.

Police say 21-year-old Bradley Walls was shot in the head while driving a car in downtown South Bend. He crashed into a utility poll on LaSalle Ave. around 3:45 a.m., and was pronounced dead a short time later.

"[It] kinda makes you nervous," said Kevin Pope, who lives near the scene of yet another Sunday morning shooting. "Makes you wonder for your safety and your home."

The final shooting happened near Kevin Pope's home — near Elwood and College — around 5:40 Sunday morning.

"I didn't hear anything," he told WSBT.

As he tries to protect his young son from increasing violence in his neighborhood, Pope is asking the same question investigators are trying to figure out.

"I don't know if it's a retaliation of other shootings," he wondered.

And other neighbors are wondering if a police presence near their homes is enough to keep their families safe.

"Patrolling doesn't seem to do a whole lot," said Bryan Woodward.

Police say all five shooting victims are between the ages of 16 and 23 years old. Investigators are looking into the possibility that all the shootings could be related.

Sunday morning's fatal shooting marks the twelfth homicide in South Bend this year. In 2006 there were 7 murders. But in 2001 and 2002, there were 21 and 20 murders, respectively.