The Russian secret police are tipped off, apparently by Chinese embassy staff, that a US spy is on his way to the US Embassy for protection and that they should act quickly if they want to catch him and recover the secret documents in his possession.
The KGB is informed, supposedly by Chinese embassy personnel, that a US intelligence officer is en route to the US Embassy for protection and that swift action is necessary if they wish to apprehend him and retrieve the classified materials he carries.