How a gun bought online could end up on the streets of Chicago

In the wake of a gunman’s deadly rampage in Las Vegas, US authorities are searching for a gunman who bought an AR-15-style rifle online from a pawnshop in Wisconsin.

Investigators say the man, a Wisconsin resident named Stephen W Smith, bought the weapon from an online retailer in April, according to The Associated Press.

Smith had previously sold a .45-caliber Glock handgun to a man in Illinois, the AP reported.

Smith’s alleged accomplice in the Illinois shooting was also arrested in Nevada and is still on the run, the outlet said.

Smith is a former Navy Seal and retired Army general.

His Facebook page shows he is a Navy SEAL.

His military background also appears to be a factor in the Chicago attack.

The Washington Post reported that Smith was previously convicted in 2010 of illegally possessing a firearm while on active duty.

The AP reported that his former partner told police Smith was also a convicted felon and had been sentenced to six years in prison.

“The Chicago attack is yet another example of how gun violence is affecting the fabric of our communities,” Chicago Mayor Rahm Emanuel said in a statement after the attack.

Smith, 49, was arrested Tuesday in Nevada.

Police said he has been charged with a federal felony count of unlawfully possessing a weapon and two counts of attempting to use a weapon of mass destruction.