Multiple people were shot Sunday morning in the Park Manor neighborhood on the South Side. | Chicago Fire Department The other wounded people were all listed in serious or critical condition. Twelve people were shot, at least two fatally, after gunfire broke out at a Park Manor business where a party was being held early Sunday, according to the Chicago Fire Department. A fight broke out between several people attending the party about 4:40 a.m. in the 6700 block of South South Chicago Avenue when gunfire erupted, Chicago police said. Twelve people were struck, ranging in age from 20 to 44 years old, according to police. Two people were pronounced dead, fire department spokesman Larry Merritt said. The other wounded people were all listed in serious or critical condition at hospitals. Sophie Sherry/Sun-TimesPolice investigated a scene of several people shot March 14 in the Park Manor neighborhood. A photo of the scene shared by the fire department showed balloons and a shoe strewn outside the South Side Think…