BROCKTON, Mass. (WHDH) – A Brockton convenience store was robbed and a clerk was held at gunpoint, officials say. The incident happened Saturday afternoon. Police say a robber walked into the store, pointed a gun at a clerk and started demanding cash. At some point during the incident, another employee became involved. That employee fought back and wrestled with the alleged robber, who pistol whipped the employee several times. The employee is OK.