A 19-year-old man killed in a crash in Kalihi has been identified as Alvin Esteban of Honolulu.

Police said Esteban was traveling south on Kalihi Street on a moped Saturday night at a “high rate of speed” when he lost control and struck an overpass guardrail. He was thrown from his moped onto the roadway and pronounced dead at the scene.

Police said speed is a factor and drugs may be involved.

An autopsy is expected to be performed today to determine the exact cause of death.

This is the 51st traffic-related fatality on Oahu compared to 44 at the same time last year.