As Cologne prepares for New Year's Eve a year after a spate of sexual assaults, officials are considering ramping up security with helicopters, video surveillance and restricted entry to certain places, according to a media report.

A group of experts from state and federal police have been analyzing the events of New Year's Eve last year under a project called "Silvester" - meaning New Year's Eve in German. Their final report is set to be discussed at a conference of interior ministries starting on Tuesday, and Cologne's Express newspaper obtained a copy of the police recommendations, the newspaper reported on Monday.

More than 1,000 women came forward after New Year's Eve to report robberies or sexual assaults in Cologne, while other cities had similar reports of groups of men surrounding and harassing women that night.

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