Questions Remain About Wal-Mart Security Guard Who Bought San Bernardino Shooters’ Rifles

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A 24-year-old Wal-Mart security guard, known to friends as a shy cycling enthusiast who wanted to join the military, has emerged as a key figure in last week’s terror attack at a San Bernardino social services center.

Enrique Marquez is shown in a photo he posted to his Facebook page Oct. 2, 2015. A neighbor confirmed the photo showed Marquez.

Enrique Marquez is shown in a photo he posted to his Facebook page Oct. 2, 2015. A neighbor confirmed the photo showed Marquez.

Enrique Marquez Jr. purchased two military-style rifles several years ago that Syed Rizwan Farook and Tashfeen Malik used in the attack that killed 14 people at the Inland Regional Center, according to federal authorities.

Marquez, who had attended prayers at an Islamic center in recent years, lived next door to Farook on Tomlinson Avenue in Riverside for many years. Neighbors said they were good friends who often worked on old cars together. Marquez also cemented his connection to his next-door neighbor by marrying the sister of Farook’s sister-in-law last year, according to county records.

The circumstances of the marriage are now under investigation, according to a federal official who spoke on condition of anonymity because the probe is ongoing.

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