A Texas man accused of killing his three children -- including a baby -- and shooting his wife turned himself into police Thursday night, according to reports.

Police in the Houston-area suburb of Texas City had been searching for Junaid Hashim Mehmood, 27, after the victims were found hours earlier in an apartment complex.

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Police said Mehmood was taken into custody on an unrelated warrant, KHOU-TV reported.

The children and their mother were found after a relative called the police around 6:15 p.m. to perform a welfare check at their apartment complex, a police statement said.

The slain children were identified by police as an infant girl, a toddler boy and a 5-year-old girl. The mother suffered a gunshot wound to the head but was not identified, a police statement said.