Dallas police have issued a Silver Alert for a 66-year-old man with cognitive impairment who vanished late Saturday night without his shoes on, and investigators say his disappearance poses a credible threat to his health and safety. Alexander Ngoke was last seen around 11:50 p.m. on Saturday wearing a cream long-sleeve shirt and gray shorts, with no shoes, near Pineland Drive in Northeast Dallas.
According to NBC 5 Dallas-Fort Worth, the Dallas Police Department described Ngoke as a Black male and said people with information are asked to call police at 214-671-4268. A newer public notice issued Sunday from the Dallas Police Department
added physical specifics missing from the initial bulletin: Ngoke stands 5 feet 9 inches tall, weighs roughly 130 pounds, and has short gray hair and brown eyes. The case is being tracked under number 149877-2026.
There is a discrepancy in exactly where Ngoke was last seen. The original alert placed him near the 5000 block of Pineland Drive, but the department's official case file instead identifies the 5700 block of Pineland Drive as his last known location — squarely inside the Vickery Meadow neighborhood. That stretch is a densely packed corridor of multi-family apartment complexes near Texas Health Presbyterian Hospital Dallas and DART transit lines, according to data compiled by Yardi Matrix, a density that makes door-to-door canvassing and transit-camera checks especially important for investigators.
A Second Missing-Person Case on the Same Street
Ngoke's disappearance wasn't the only one unfolding on Pineland Drive that night. Police also responded to a separate missing-person report involving an 8-year-old child in the 6000 block of the same street, who was found safe the following morning, as reported by CBS News. The overlapping cases meant an elevated police presence along the corridor overnight as officers worked both searches at once.
Silver Alerts in Texas operate under a specific legal framework. They're authorized under Texas Government Code Section 411.382, a statute that established a statewide emergency broadcast system back in 2007 to push public notices out through news media and dynamic highway signs. A statewide Silver Alert is not issued automatically whenever a senior or cognitively impaired resident goes missing; the person must meet multiple eligibility criteria, including age or diagnosis, a credible safety threat, documented impairment, an investigation ruling out alternative explanations, a request within 72 hours, and sufficient information, per the Texas Department of Public Safety. Before that statewide broadcast can go out, though, local police must obtain written documentation from a physician or mental health professional confirming the person's diagnosed cognitive impairment, a safeguard meant to rule out voluntary disappearances.
Strict Timelines Govern How Long Alerts Stay Active
State guidelines also set firm deadlines: local agencies must submit Silver Alert requests within 72 hours of a disappearance, and once activated, an alert is valid for 24 hours, with investigators able to request an extension. Separately, Dallas Police Department General Orders allow cases involving missing adults with diminished mental capacity to be classified as “critical missing,” a designation that eliminates mandatory waiting periods and immediately triggers a 24-hour active field search by city patrol units — a local protocol that runs independently of the state alert process, as Hoodline has reported before.
Officers also lean on technology during these searches. Dallas police use automated license plate readers and Flock Safety camera networks across local transit corridors to help track vehicles and canvass areas tied to critical missing persons, according to an October public safety report filed with the Dallas City Secretary's Office.
Why Hours Matter in Cognitive Wandering Cases
The stakes in cases like Ngoke's are steep. Alzheimer's Texas estimates that roughly 60% of people with cognitive impairments will wander away from safety at least once, and NIH research found that roughly 46% of missing wanderers suffer serious physical injury or death if they are not found within 24 hours. With Ngoke reported missing without shoes late at night, that first-day window is considered critical for avoiding harm.
The financial toll of these searches is also significant. An Alzheimer’s initiatives report from the International Association of Chiefs of Police estimates that search and rescue operations for missing adults with cognitive impairments cost law enforcement and emergency services an average of $1,500 per hour, underscoring why early public tips can matter just as much as officers in the field. Anyone with information on Ngoke's whereabouts is urged to contact Dallas police.
