MALIBU (CBS) — Half a ton of marijuana was seized after Los Angeles deputies interrupted an overnight attempt to smuggle it ashore.

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(credit: CBS)

Investigators received a tip from someone who spotted a panga boat, which are often used by smugglers from Mexico.

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The boat landed at Pirate’s Cove sometime between Friday night and early Saturday morning and deputies arrested three men. They said another man was able to escape.

Authorities closed Point Dume State Preserve Saturday morning as they searched for that fourth suspect.

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The boat was reportedly loaded with 40-50 bales of marijuana, police reported.