Nassau County police are searching for a masked man who allegedly robbed a woman at knifepoint in the parking lot of a medical office building in Mineola on Friday evening.

Detectives said the 42-year-old victim was placing items into her vehicle parked at 120 Mineola Blvd. about 6:25 p.m. when a stranger approached her, displayed a knife and demanded money.

Police said the woman complied and the suspect fled the scene on foot toward Willis Avenue. Her purse was later recovered in the rear of a building at 203 Willis Ave., but an undetermined amount of money and "personal papers" were missing, police said.

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There were no reported injuries, police said.

Detectives request anyone with information about the crime to call Nassau County Crime Stoppers at 800-244-TIPS. All calls will remain confidential.