There is an extra push — in the form of billboards, reward money and more — to get the community to come forward with information about any of the four murders in Seminole Heights.

There are now 19 billboards in the area asking the public to call Crime Stoppers, a dozen going up Wednesday night.

On Thursday, the reward for information leading to an arrest climbed to $100,000 after a business donation.

After three people were shot and killed in a week-plus period in October, a fourth person was killed this week in the same area. Police have blanketed the area since early Tuesday morning as they search for a break in the case.

About 2,800 tips have been called in to Tampa Police and Crime Stoppers.

Crime Stoppers President Debbie Carter said every bit of information called in can help catch the killer.

"It may be several pieces of the puzzle, and that's why anyone's encouraged to call in that has any little bit of information," Carter said. "It may not be that one phone call that calls in and gives all of the information; it may be several with just a little bit to put that puzzle together," she said.

Also, Gov. Rick Scott on Thursday directed the Florida Highway Patrol to aid in the investigation with Troopers helping beef up patrols in Seminole Heights.

WATCH: Tampa Police release surveillance video connected to 4th Seminole Heights murder

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After a tip is called in, it's categorized "basically by the amount of information that's provided," Carter said in describing the process. "If it's urgent, really needs to be looked at, or if it's something that it's just general information."

Crime Stoppers stresses to callers that they'll remain anonymous.

"We have a special system that scrubs those numbers," Carter said. "There's no IP address, there are no telephone numbers that show up."

Outfront Media, which sponsored 12 of the billboards, said they’ll stay up as long as needed.

Seminole Heights councilman pleads for tips

Meanwhile, city Councilman Frank Reddick, who represents Seminole Heights, asked residents Thursday to help find the killer.

"I'm asking my brothers in the community because they probably relate to this person, they probably know this person.

Reddick said if people don't feel comfortable calling police, they can call him.

"I'll be willing to take that information and not reveal their names and pass that information on to law enforcement," he said. "Something's got to be done. Something's got to be done real soon."

Thank you @CCOutdoorNA for helping us appeal to the public for information on the #SeminoleHeights murders. Reward is now up to $100K ! pic.twitter.com/vX7VysZkqp — TampaPD (@TampaPD) November 16, 2017

The NAACP said it has received calls from residents worried about the increased police presence in the area and the fact that officers are asking to enter homes.

The push to find the Seminole Heights killer has led to a spike in unrelated arrests in the neighborhood of those with warrants or probation violations.

One resident said, "It's been a bit intimidating. So what about that person who decides, 'No, I don't want you to come into my home.' Now what happens?"

The NAACP said it would reach out to the police chief to make sure rights are not being violated.

Reward for information now at $100,000

A reward for information leading to an arrest in the homicides is now up to $100,000. On Thursday, Tampa restaurateur Richard Gonzmart pledged $9,000 to bring the total to $100,000. Anyone with any information is urged to call Tampa Police at (813) 231-6130 or Crime Stoppers of Tampa Bay at 1-800-873 (TIPS).

"The support from the community and our law enforcement partners has been inspiring,'' Police Chief Brian Dugan said. "I can't thank them enough for stepping up. The reward money is truly impressive, and that's only one of the many ways that people are showing their support."

Tampa Police are being assisted by FBI agents, the Florida Department of Law Enforcement and Hillsborough County Sheriff's deputies.

Dugan said authorities think whoever is responsible for the murders lives in Seminole Heights, which may explain why they have been able to disappear so quickly.

Police continue to work with the community to make sure surveillance cameras are on and recording at all times.

Interactive timeline