It’s been 11 years since Tammy Marie Esquivel was allegedly gunned down by her boyfriend, William Joseph Greer. Spending over a decade evading police and landing himself on the U.S. Marshals’ most wanted list in the process, police say a missing toe is what helped them confirm the identity of the suspected murderer.

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According to a report from the New York Daily News, it was on the night of December 19, 2006, when Greer’s two children, aged 9 and 13 at the time, told police they heard their father and Esquivel arguing. The argument became increasingly louder until gunshots cut through the air, followed by an eerie silence.

Greer was located three days later when he drove his truck into a ditch in Liberty County, Texas. Officers say Greer was partially clothed at the time and appeared to be intoxicated. He explained to police on the scene that he loved Esquivel and that the gun “just went off.” This exchange was caught by the watchful eye of police dash cams, but it wasn’t enough to convict Greer. Instead, he was released from custody shortly after posting bail for public intoxication.

Investigators say that’s when Greer went on the run.

A warrant was issued for Greer’s arrest in January 2007 but authorities would soon discover that Greer had flown off the radar. Included within the description of Greer issued by the U.S. Marshals’ office was a distinct characteristic; a missing toe. It would later be that same missing toe that would lead authorities to conclude that the man taken for questioning in Nacajuca, Mexico was the same man who had been listed on the “15 Most Wanted List” issued by the U.S. Marshals’ office in 2016.

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“As we approach the 11th anniversary of Tammy’s murder, we hope that this arrest brings Tammy’s loved ones some sense of closure,” a representative of the U.S. Marshals stated in a press conference.

Greer is currently being held by Mexican authorities, pending extradition back to Texas where he will be turned over to the Harris County Homicide Division.