The crash happened during the first Supertwin Race of the year at Alpine.
Spanish rider Raul Torras Martinez aged 46, was killed in a crash during the first Supertwin Race of the year at Alpine.
The fatal incident occurred between the 16th and 17th mile markers on the third and final lap of the race.
A statement issued by the competition paid tribute to the experienced Spanish TT rider.
It said: "Raul was an experienced TT competitor who made his debut in 2017, with a best result of 15th in last year's Supertwin Race.
"He recorded his fastest ever lap of the TT Mountain Course earlier today in the Superstock Race, with a lap at an average speed of 125.470mph whilst securing a 20th-place finish.
"Raul was the fastest Spaniard ever to have lapped the TT Course.
"In total, Raul competed in 21 TT races and his performances earned him a total of 18 Bronze Replicas.
"The Isle of Man TT Races pass on their deepest sympathy to Raul’s family, friends, and loved ones."
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