Xing Lu told police he was looking over the dog that wasn't his.
The victim has been identified as 16-year-old Kayalleiujah Gibson of Indianapolis.
Police arrested 21-year-old Sarah Ann Mills, who was found in labor in the front of a yard on South County Road 100 East in Claypool.
Officers were called to the 500 block of King Avenue around 6:17 a.m.
Two people accused of holding an Evansville, Ind., mother of two captive for two months and locking her in a cage will face a judge Monday.
Officials said there were 150 people at the birthday party, which was advertised on Instagram.
According to IMPD dispatchers, the man was shot in the 4300 block of E. 34th Street around 8:50 p.m.
IMPD officers and a SWAT team were scene at the condos for around five hours Sunday after a report of a suicidal, barricaded man.
Authorities believe an Evansville woman missing nearly two months was held captive under terrible conditions in a mobile home.
Dominique Allen's family moved efforts to find clues about her murder to downtown Indy Saturday night.