Multiple people have been injured after a shooting at a business park in Edgewood Wednesday morning, authorities said.

Authorities are asking the public to avoid the Emmorton Business Park area after reports of a shooting.

Harford County authorities are leading the investigation, assisted by state troopers and officers from surrounding counties. Special agents from the ATF are also on the scene, and the FBI is aware of the incident.

Authorities are looking for a man behind the wheel of a red Dodge Charger with Delaware tags. More details should be discussed at a media briefing yet to come.

At least two patients have been sent to Shock Trauma in Baltimore.

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A modified lockdown is in effect at Edgewood High, Edgewood Middle, Deerfield Elementary, Edgewood Elementary and William Paca/Old Post Road Elementary schools.

Here is the statement from Harford County Public Schools:

This is an important message regarding an incident in the community that has affected the school day at Edgewood High School, Edgewood Middle School, Deerfield Elementary School, Edgewood Elementary School and William Paca/Old Post Road Elementary School.

On the advice of the Harford County Sheriff’s Office, these schools are currently on modified lockdown due to an incident in the surrounding community. The modified lockdowns are being conducted in an abundance of caution. The modified lockdown requires students to remain in the building, with no outside activities. In addition, no visitors are permitted to enter our building at this time. When we are given the all clear by the Sheriff’s Office and the modified lockdown is lifted, we will update the affected school communities.

Our schools are secure at this time and we ask for your patience and understanding that we are receiving an influx of calls and you may not be able to get through right away- we will do our best to answer any questions you may have if it is necessary to contact the affected schools at this time. Thank you for your continued support of Edgewood High, Edgewood Middle, Deerfield Elementary, Edgewood Elementary and William Paca/Old Post Road Elementary Schools

Witness Mike Sullivan, with R. E. Michel Company, said he came to work around 7 a.m. He said a client of his company, who has a CB radio warned him and his coworkers to take cover after reports of an active shooter.

"Right now, it's total chaos," Sullivan said.

Sullivan said the area is very populated and has dozens of businesses in the area.

"We actually locked in right now with three of our clients. We tried to put everybody by a door that has windows," Sullivan said.

Sullivan they are positioned strategically to see any movement outside. Sullivan said someone from the business next door described what preceded the shooting.

"Next door we have another business that we know pretty well, and as we were outside talking they guy said that he heard a bunch of arguing that calmed down. Then, he heard a bunch of more arguing. He said it sounded like a big huge fight going on and then next think he knew he heard some noises -- didn't sound like gunshots or didn't really think it was gunshots -- but the next thing he knew that's when all chaos broke out," Sullivan said.

Reports from Official Site of the Harford County Sheriff's Office:

Harford Sheriff @Harford_Sheriff

We can confirm we on the scene of a shooting in the Emmorton Business Park. Multiple injuries reported.

9:43 AM - Oct 18, 2017

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Harford Sheriff @Harford_Sheriff

Alert: Police Activity in area of Emmorton Business Park. Avoid the area.

9:11 AM - Oct 18, 2017

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Harford Sheriff @Harford_Sheriff

MEDIA ALERT: Media staging for Emmorton Business Park incident is the Burger King Parking a lot off Edgewood Rd near Rt. 24. PIO enroute.

9:41 AM - Oct 18, 2017