Sparks Police are investigating an early morning robbery at a 7-11 store. According to police, the suspect walked into the 7 11 on 15th street and demanded money from the clerk. The suspect had a knife and left with an undisclosed amount of cash, as well as various other items from the store. The suspect’s face was obscured, but witnesses or anyone who has any information is encouraged to contact the Sparks Police Department or Secret Witness, 322-4900. Secret witness is offering a $1,500 reward for information leading to a prosecution.