Three people were killed and two were in critical condition after a "targeted attack" by a gunman at a business establishment in Maryland in the US early on Wednesday, officials said.

The Harford County Sheriff's Office said the Wednesday morning shooting happened at Advanced Granite Solutions in Edgewood. Major William Davis said investigators are involved in a manhunt for the suspect, who was identified as Radee Labeeb Prince, 37, CBS News reported.

Davis said all five victims were employees and that the attack appeared to have been targeted. Davis said Prince was associated with the business but didn't know how.

"We have lost three lives so far this morning in Harford County," Sheriff Jeffrey Gahler said at a news conference, adding it was not a random shooting but a "targeted attack."

Two victims from the shooting were taken to Shock Trauma hospital in Baltimore and are listed in critical condition, the facility said on Twitter, Fox News reported.

Source: Khaleej Times