Herts Police are appealing for help tracing a teenager who has gone missing from South Oxhey.
Isaac, 16, was last seen at around 12.20pm on Monday (29 January) in the village.
He is described as being of slim build, around 5ft 8ins tall, with short black hair and brown eyes.
He was last seen wearing a navy puffer jacket, a black T-shirt, navy Nike tracksuit bottoms and black trainers.
He also has links to Redbridge in London and Brighton in Sussex.
Officers are concerned for Isaac’s welfare, the force said.
In a social media post, they wrote: "If you have seen Isaac since he was reported missing or have information about where he has been, report information online at herts.police.uk/report, speak to an operator in our Force Communications Room via our online web chat at herts.police.uk/contact or call the non-emergency number 101. Please quote ISR 042 (30 January)
"If you believe you are with Isaac now or have seen him in the last few moments, please call 999 immediately."
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