UK counter-terrorism police are reportedly looking into an "unknown substance" incident near Salisbury.<br /><br />A major incident has been declared in the town of Amesbury in Wiltshire. It is feared that two people have been exposed to the unknown substance.<br /><br />Footage captured this morning (July 4) shows emergency services examining several places in Amesbury that the pair had visited before they fell ill. <br /><br />The couple were found unconscious at a property in Amesbury, which is near Salisbury, where former Russian spy Sergei Skripal and daughter Yulia were poisoned by a suspected military nerve agent in March.
