At least two people are dead and 28 others were injured in a mass shooting during a party in Baltimore on Sunday morning, local media reported.

Nine people were transported to local hospitals and three of the injured are in critical condition, according to the reports.

The shooting took place just after 12:30 a.m. at a block party in the southern part of the city, The Associated Press reported citing a local police officer.

Police take security measures after the mass shooting incident at the 800 block of Gretna Court in Baltimore, Maryland, United States on July 2, 2023. (Anadolu Agency/Getty/Kyodo)

All of the victims were adults. Police said an 18-year-old woman was found dead at the scene and a 20-year-old man was pronounced dead at a hospital shortly after, according to The Associated Press.

No arrests had been made immediately after the shooting, local reports said.

"This was a reckless, cowardly act that happened here," Baltimore Mayor Brandon M. Scott said at a news conference, adding "I want those who are responsible to hear me, and hear me very clearly. We will not stop until we find you, and we will find you."