LOS ANGELES (CBSLA) — Thieves shattered a plate glass window at the Nordstrom store, just hours after thousands flocked to the Grove for the shopping center’s annual Christmas lighting event.

The burglary was reported at about 4:45 a.m. at The Grove, where Los Angeles police found a shattered plate glass window and discarded black clothes on the ground beneath the window.

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Witnesses told police they saw as many as six men in masks use a sledgehammer to break the window, ran inside and grabbed men’s clothes and accessories.

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The men took off in five different cars, and were last seen speeding away on 3rd Street.

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There’s been a spate of similar burglaries at high-end clothing stores in the West Los Angeles area this year. In October, a group of burglars also used a sledgehammer to smash into a Fairfax boutique called The Cool. Two weeks later, break-ins reported at a West LA Baskin-Robbins shop and a pizza parlor were committed by suspects using an ax who fled both scenes in two cars. In May, burglars removed a plate glass window from a Saks Fifth Avenue on Wilshire to get in and left smashed-in, empty jewelry cases behind at the scene.