Two teenagers who died in October slipped out of their parents' home and were traveling at a high rate of speed, the FHP report says.

The two Lakewood Ranch teenagers were supposed to be at home, asleep at 5 a.m. But instead they slipped out of their parents' �homes, visited with friends, drank alcohol and filmed a quick Snapchat�video as they took the last drive of their lives.�

Their activities are detailed in a report issued last week by the Florida Highway Patrol about the Oct. 15 crash along Lakewood Ranch Boulevard that killed Brendan T. Shreve, 17, and his friend, Jared S. Duran, 15.

Investigators concluded the driver, Shreve, was driving under the influence of alcohol and was speeding at the time of the crash.

According to the report, it was 5:05 a.m. and Shreve was at the wheel of the 2012 Mercedes C350 heading south and entering a curve, when the car missed the turn, jumped the curb and slammed into a tree in the median, just north of Clubhouse Drive and minutes from the boys' homes.The impact was so great that the car split in half with the rear traveling 50 feet southwest from the tree and the front going southeast for 165 feet.

Later that day, as word spread, teenagers flocked to the tree to mourn. Friends set up Go Fund Me accounts to help the families pay for funeral expenses and, months later, Lakewood Ranch officials agreed to erect a permanent memorial in a safer spot nearby.

The rubble left from the crash indicated speed was a factor. The speedometer needle was stuck at 80 mph when investigators examined the wreckage, the report noted, but the actual speed could have been between 64 and 113 mph in the 35 mph zone.

The teenagers both died at the scene from blunt impact to their heads. Both wore seat belts, but Shreve's belt was cut away as the vehicle scraped along the asphalt.

Neither teenager tested positive for drug use, but blood samples obtained during autopsies show Shreve had a blood-alcohol content of .095, and Duran's was .097. The legal limit in Florida is .08 for adults and .02 for those younger than 21.

Both boys had been drinking at Shreve's girlfriend's father's house in Parrish while the father was out of town. �

The boys left at 4:50 a.m. to head home. Duran took a Snapchat video along the way that shows Shreve laughing and driving. Minutes later, the car smashed into the tree.

Both sets of parents did not know the boys were out, the report said. Shreve's car privileges had been temporarily taken away by his parents, according to the report, and Duran's parents said their son was grounded and in bed. When a trooper and Duran's parents checked, they found pillows arranged to make it appear he was asleep.

After their deaths, the tree became a memorial site for the boys, who attended Lakewood Ranch High School; Shreve was a junior and Duran a sophomore. �Lakewood Ranch Community Development District 1 officials heard concerns about the safety of people visiting the makeshift memorial and also of the aesthetics of the pile of mementos left there.

A memorial bench will be installed on the west side of the road. The families are cooperating in choosing the proper wording for the plaques that will pay tribute to the boys. A third plaque will honor Donald Mader, 83, who died in April 2014 after a car ran a red light and struck his bicycle in the same stretch of the road.

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