Family identifies Officer Montrell Jackson as a Baton Rouge shooting victim

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BATON ROUGE, La. – (CNN) A Missouri man ambushed and killed three law officers and wounded three others in Baton Rouge on Sunday during a time when police nationwide and in the Louisiana city in particular have been on high alert after five officers were killed in a Dallas ambush July 7.

Louisiana State Police announced last week that they had received credible threats of lethal plots against Baton Rouge police and had arrested three men and a 13-year-old boy.

On Sunday, a man identified as Gavin Long of Kansas City went on a shooting rampage on his 29th birthday that left two police officers and a sheriff’s deputy dead, police sources said.

Police have not released the names of the victims but one was identified by family members as Officer Montrell Jackson, according to Jackson’s aunt.

“Today isn’t going too well,” she said.

Responding police officers killed Long, who was born on July 17, 1987, in a gunbattle after the other officers were ambushed, police sources told CNN.

Two Baton Rouge police officers — ages 41 and 49 — died, said Police Chief Carl Dabadie. The gunman also killed a 45-year-old sheriff’s deputy and critically wounded a 41-year-old deputy who is “fighting for his life,” said East Baton Rouge Parish Sheriff Sid Gautreaux.

Another wounded deputy and police officer have non-life-threatening wounds, law officers said