The Latest on shootings in Mississippi that left three dead and one wounded (all times local):

3 p.m.

Authorities say a man charged with killing three Mississippi residents was a onetime jailhouse informant instrumental in convicting another man of four 1996 shooting deaths.

Odell Hallmon is charged with three counts of first-degree murder, one count of aggravated assault and one count of being a felon in possession of a firearm. A judge on Wednesday ordered him held without bond in connection with the pre-dawn shooting deaths of his former girlfriend, the girlfriend's mother, and a third man. A fourth man was shot and wounded, all in Mississippi's Montgomery County.

The 40-year-old man previously testified that another man confessed in prison to the 1996 shooting deaths of four people. Three guilty verdicts were overturned, two trials ended with hung juries, but Curtis Flowers was ultimately convicted and sentenced to death.

___

1 p.m.

A Mississippi sheriff says authorities will criminally charge 40-year-old Odell Hallmon in a series of separate shootings that left three dead and one injured in a single county.

Sheriff Bubba Nix of Montgomery County says Hallmon will make an initial appearance before a judge on Wednesday, hours after the shootings in Montgomery County. Nix says he's consulting with Montgomery County District Attorney Doug Evans on charges.

The sheriff says Hallmon is accused of shooting and killing 32-year-old Marquita Hill and her 59-year-old mother, Carolyn Sanders, and shooting and killing 32-year-old Kenneth Loggins. Nix says Hallmon and Hill have a son and that Hallmon had been living with them until recently.

Nix says Hallmon allegedly shot and wounded another man, Marcus Brown, elsewhere in the county. Brown has been hospitalized.

___

11:45 a.m.

Investigators say three people are dead and one wounded after separate predawn shootings in three different locations in one Mississippi county.

Mississippi Department of Public Safety spokesman Warren Strain says 32-year-old Kenneth Loggins was found shot to death at a home in Montgomery County. He says 32-year-old Marquita Hill and her 59-year old mother Carolyn Ann Sanders were found dead at another home in the county.

Ty Young of West Point tells The Associated Press his cousin, Marcus Brown, also was shot multiple times at another house. Young says Brown is alert but in critical condition at University of Mississippi Medical Center in Jackson.

Strain says authorities are questioning a person about the shootings.

___

9:45 a.m.

Three people are dead and a fourth has been wounded after a series of shootings before dawn Wednesday in one Mississippi county.

Warren Strain, a spokesman for the Department of Public Safety, says a man is being held for questioning in what investigators believe are related shootings in Montgomery County. He says the man hasn't been charged.

Strain says a woman and her daughter were shot and killed in one location and then an acquaintance of the women was shot and killed elsewhere. A fourth man was shot and critically injured, but Strain says he's not sure where that happened. That man was hospitalized.

The shootings took place after 2 a.m. on Wednesday in and around Kilmichael, a community about 90 miles north of Jackson.