The search for Gannon Stauch, an 11-year-old boy who has been missing for nearly four weeks, was again suspended Friday without explanation.
After a brief pause earlier in the week, teams resumed search efforts Thursday in southern Douglas County, near Colorado 105, but they were halted again on Friday, the El Paso County Sheriff's Office tweeted.
Any resumption of the search will be based on leads, according to the Sheriff's Office, which didn't say when that would happen.
Friday, the Metro Crime Lab returned to Gannon's Lorson Ranch on the southeast edge of Colorado Springs for at least the second time since he disappeared, said Sheriff's Office spokeswoman Jackie Kirby.
"We're not going to elaborate on what the crime lab was doing out there except that it was part of our investigation," Kirby said. "If nothing else, it shows the community that this investigation has not slowed down."
At a briefing Friday for the media, Kirby was asked if investigators have found any signs of foul play in the boy's disappearance Jan. 27.
"We have to go where the tips and the leads take us and right now Gannon's disappearance is being investigated as a missing and endangered person case," Kirby said. "When that changes we will let the community know."
Kirby also declined to say why the search moved from the neighborhood around the boy's home to southern Douglas County about 45 miles north.
"There are investigations where you'll find a lot more being released than what is being released in this investigation," Kirby said. "But it is all what the investigation dictates in what we can and cannot release.
"I would just ask the community to trust that the absence of specific information doesn't mean that the investigation isn't going forward, because it is."
Gannon was reportedly last seen by his stepmother, Letecia Stauch, who told investigators the boy walked to a friend's house before he went missing.
Initially, his disappearance was treated as a runaway. Two days later, sheriff's officials referred to him as a missing and endangered child, which allowed them to call on the resources of the FBI and nationwide missing children organizations.
So far, the Sheriff's Office has received more than 700 tips from the public, Kirby said.
Anyone with information is asked to call the tipline at 520-6666 or send an email to email@example.com.