St. Louis police fatally shot a knife-wielding suspect Tuesday after they said the suspect refused to put the weapon down and tried to attack them, Fox2Now.com reported.

The incident took place about 2.6 miles from the Ferguson protests, and occurred at about 12:30 p.m. The suspect reportedly entered a convenience store and showed the store owner his knife and the two got into a dispute. 

Police Chief Sam Dotson says the man was acting erratically and told responding officers to "shoot me now, kill me now."

This account was reportedly backed up by several witnesses.

Dotson also claimed that, having refused to obey the officer's commands, he then approached within four feet of them in an attack posture. St. Louis Police Capt. Ed Kuntz says officers opened fire when the man raised the knife and moved toward them.

None of the police officers were injured. 

The Associated Press contributed to this report.