November 18, 2014 (La Mesa)--A suspect armed with a handgun tried to rob the 7-11 Store located at 8747 La Mesa Boulevard shortly before 11 p.m. last night.  An employee was working behind the checkout counter when the suspect walked in and browsed for a few minutes, departing without making a purchase.  He returned one minute later and walked up to the checkout counter, lifting his shirt to reveal a handgun tucked into his waistband.  The suspect demanded that the employee open the cash register.