Chilling meaning behind secret markings appearing overnight on homes – check your fence NOW

HOMEOWNERS have been urged to check their fences as strange markings have been scrawled on a number of properties. Three different codes have popped up outside homes in Adelaide, Australia, amid fears burglars are prowling for easy targets. RedditStrange markings have appeared outside homes in Adelaide[/caption] RedditResidents fear they have been scrawled on by would-be thieves[/caption] Secrets markings have been drawn on fences, pipes, mailboxes and even doorways of homes in the city. Some have four parallel lines scribbled on, while others have “NT” and “S”. One concerned resident shared snaps of the bizarre markings on Reddit and was left shocked by what they mean. They said: “Found these marked on our fence and back door entrance. More from Australia SUPERCAR RAMPAGE Driver crashes £250k Lambo after ‘hitting 130mph in high-speed cop chase’ LAWN & ORDER My neighbour dumped massive pile of DIRT on my lawn - and then they blamed ME “They appeared overnight. Thoughts? Could the house be marked for a burglary? “Looked around the neighbourhood and noticed both corner houses of our block have had their mailboxes marked.” The social media user said they found the markings on their gate and back door. They added: “The four strike marks at the back entrance were on the only place visible but not exactly obvious area. Most read in The Sun PIERS MORGAN Who the f*** does Meg think she is preaching at us after flinging muck at UK? PEOPLE POWER Martin Lewis quizzes tycoon over 'ripping people off' claims in GMB clash summer over Celebs post kids' back to school pics - can you tell who the proud parents are? PUMP IT UP Drivers warned over petrol prices at supermarkets including Asda and Tesco FEELS NICE Barkley joins Nice on free transfer and poses in front of mirror wearing new kit SOCK IT TO 'EM Fans are all saying the same thing as Arsenal wear 'basic £10 socks' vs Utd “They were the last ones we found. We walked past them multiple times without seeing them.” Other users revealed the markings were likely done by would-be thieves, with the lines representing how many days they had been watching the house. Users also agreed that “NT” stands for “no threat” and “S” means “security”. One said: “NT means ‘No Threat’, as in you’ve got no security. “Best to remove the markings ASAP.” Another added: “No threat, from dogs or security etc.” The spooked Reddit user said they contacted police about the markings. It comes after terrified homeowners issued an urgent warning after secret symbols used by burglars appeared on their walls. People living in Stoke-on-Trent said the mysterious chalk markings showing a circle with a diagonal line were left on homes. Read More on The Sun LESSON LEARNED I’m a super-organised mum & have four back-to-school tips I swear by BLOW DRY How much does it cost to run a hairdryer? The symbols are often linked to burglaries and dog thefts. But they can also be left by engineers to show any potential issues have been checked. RedditIt is thought the lines show how many days the house has been watched[/caption]