Over 600 New Mexico residents have been alerted by authorities to hand over their home security footage as the bizarre disappearance ofa retired Air Force general and UFO expertenters its 11th day.

Investigators contacted the Albuquerque homeowners to gather the home camera footage and information in an effort to track down William Neil McCasland, 68, who vanished without a trace from his home on Feb. 28, according to the Bernalillo County Sheriff’s Office.

“Investigators have contacted more than 600 homeowners in the neighborhood near Mr. McCasland’s residence to request security camera footage or information,” a police spokesperson told The Post.

“To date, no sightings have been reported.”

Local authorities, working alongside the FBI, said they’ve received dozens of tips in the missing persons case — although none have yet to bear any fruit.

“While none have resulted in a confirmed sighting or led directly to Mr. McCasland’s location, investigators are continuing to follow up on every piece of information received,” police said.

Cops said McCasland left his phone behind when he mysteriously disappeared on foot from his home.

Authorities have issued a Silver Alert for the retired general, but an investigative journalist warned the case amounts to much more than a missing senior citizen — calling it a “grave national security crisis.”

“This is a man with some of the most sensitive secrets of the United States in his head,” journalist Ross Coulthart said in the latest edition of his“Reality Check” podcast, adding that McCasland possesses deep knowledge about what the US government might be hiding regarding extraterrestrials.

“The timing is screechingly relevant. The fact that Gen. Neil McCasland has disappeared off the face of the earth is a grave national security crisis for the United States of America.”

Source: Drudge Report