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Jurors convicted an East Naples man accused of driving under the influence and killing a woman in a 2014 crash after deliberating for a little over an hour on Monday. 

Kiereek Seymour, 29, of East Naples, was charged with DUI manslaughter after an early morning crash at Lakewood and Davis boulevards in East Naples on May 19, 2014. 

Sandra Marie Maddux, 54, of East Naples, died from injuries suffered in the crash.  

Jurors began deliberations around 4:30 p.m. Monday and returned with the guilty verdict at 5:45 p.m.

The two-week trial began April 22 and was the second related to the DUI manslaughter charge brought against Seymour.  

The first trial ended in February when Collier Circuit Judge Joseph Foster declared a mistrial after a juror came out of the jury room during deliberations and indicated she was feeling uncomfortable.  

Seymour is set to be sentenced in front of Foster on June 26 at 3:30 p.m.

Previously: DUI manslaughter case: Jury can't reach verdict; East Naples man to face new trial

Both trials included conflicting assertions about whether Seymour was driving the vehicle he was found in, who was at fault in the crash and whether Seymour's blood-alcohol content was above 0.08, the legal limit for driving.   

Assistant State Attorney Mara Marzano began her closing argument on Monday by telling the jurors that Maddux lost her life because Seymour was driving impaired due to the alcohol and alprazolam he had in his system at the time of the crash.  

While Defense Attorney Peter Adrien said the state had not proven beyond a reasonable doubt that Seymour was driving the vehicle, was actually impaired or was at fault in the crash that killed Maddux.  

Witness testimony proved Seymour was driving the vehicle involved in the crash with Maddux, Marzano said.   

"There was never anyone else there,” Marzano said. “There was never any possibility that anyone else got out of that car and ran away.” 

Seymour was found by witnesses positioned on the passenger side of the vehicle after the crash and it’s not the defense’s burden to prove who, if it wasn’t Seymour, was driving the vehicle, Adrien said.  

Evidence collected by officers from the Florida Highway Patrol showed that Seymour was speeding and driving at least 62 mph at the time of the crash, while Maddux was driving 18 mph, Marzano said.  

More: 'Fighting experts' on tap in East Naples man's DUI manslaughter trial

Adrien told the jurors the investigation by Florida Highway Patrol officers was not done properly and the speeds of the vehicles involved in the crash changed in various versions of the crash report.  

Witness testimony also showed that Seymour had a yellow traffic signal and Maddux a red traffic signal, Adrien said.  

In addition, Adrien said Maddux’s car had no lights on after the crash. Maddux could have been driving the dark vehicle at night with no lights, which could have contributed to the crash, he said.   

However, Seymour’s slurred speech and medical records from the hospital after the crash prove he was impaired, Marzano told the jurors.  

“Nowhere here does it say we have to prove he was falling down drunk,” Marzano said.  

Seymour admitted to an emergency responder that he had a consumed one and a half beers before the crash and hospital staff recorded Seymour as clinically intoxicated and high, Marzano said.  

The additive effect of alprazolam and alcohol impaired Seymour, Marzano said.  

“The defense told you this was a complicated matter," Marzano said. "I would suggest to you when you pare it down to what is real and not real you will find that it is really quite simple and the defendant is guilty.”  

Adrien said none of the testing or evidence presented by the state proved that Seymour was over the 0.08 blood-alcohol level limit.     

"The defendant is not guilty and this was a horrible accident,” Adrien said. “How could he be? He was following all the traffic rules.”  

Even before February’s mistrial, Seymour had been in court before to face charges related to the crash that killed Maddux.  

The state attorney's office refiled the DUI manslaughter charge in 2016 after then-Collier Circuit Judge Fred Hardt vacated an earlier plea agreement.  

The negotiated plea agreement related to charges stemming from a Marco Island crash and charges from the crash involving Maddux. Hardt wrote that he had to vacate all sentences in the two cases. 

At a hearing in June 2016, Seymour’s attorneys argued that the officer’s sirens were not activated during the pursuit of Seymour in the Marco Island incident, court documents show. 

In an August 2016 order to vacate the sentence, Hardt agreed with Seymour’s attorneys, writing that “the officer’s dash cam clearly demonstrates that his siren was not activated.” 

Seymour was back at the Collier County Courthouse in April 2018 for a jury trial to face charges in the Marco Island incident. 

After deliberating for four hours and returning for four more hours on a second day, six jurors found Seymour guilty on all charges related to the Marco Island incident on April 27, 2018. 

However, in May 2018, Seymour was granted a new trial in that case after testimony revealed jurors found a law book left behind in the jury room and used it to deliberate. 

The book had been left behind by a bailiff who was studying for the sergeant’s exam, the bailiff testified during the hearing in which Seymour was granted a new trial. 

A new jury trial in the case related to the Marco Island incident is set to begin at 9 a.m. July 1 at the Collier County Courthouse. 

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