US Customs supervisor had 'highly suspicious' contact with Chinese officials, prosecutors say

Weapons and copies of Chinese travel documents seized during the investigation of US Customs and Border Protection supervisor Wei Xu.

Los Angeles (CNN)When federal agents raided the Southern California home of US Customs and Border Protection supervisor Wei "George" Xu in February, they seized an arsenal of more than 250 weapons, including nearly three dozen illegal machine guns, according to court records.

"Weapons of war," a prosecutor would later call them.
Xu, 56, was arrested and charged with dealing firearms without a license. He has pleaded not guilty.
But guns are not the reason the veteran officer has been held without bond since his arrest four months ago.
    Instead, the Chinese-born naturalized US citizen has remained behind bars amid concerns about his secret-level security clearance and what prosecutors described as "highly suspicious" contacts with Chinese consular officials in Los Angeles.
    Prosecutors are also examining the apparent gulf between Xu's estimated $120,000-to-$130,000 salary as a federal law enforcement officer and his "luxurious lifestyle," in which he drove a Maserati, went on big game hunting trips to Africa and had approximately $1.4 million in the bank, according to court records. The cache of weapons recovered from Xu's house was estimated to be worth more than $200,000, according to prosecutors. Additionally, prosecutors allege that Xu and his wife failed to report several years of income from a rental property they've owned since 2015.
    Xu's defense attorney, Mark Werksman, said in court papers that his client has lived in the United States for three decades, has no previous criminal record, and, because his passport was seized as part of the investigation, has no ability to travel outside the country.
    The lawyer was unsuccessful, however, in his attempt to convince a federal judge at a hearing last month that Xu could be trusted to show up for trial if he was released. The hearing marked the third time Xu's request for bond was denied.
    Annamartine Salick, deputy chief of the Terrorism and Export Crime Section of the US Attorney's office in Los Angeles and the lead prosecutor on the case against Xu, declined comment.
    In a court filin