Fatal shooting is 2nd in a week on Potrero Hill block

A man was shot and killed on the Fourth of July on the same block where another man was fatally shot just a few days earlier in San Francisco’s Potrero Hill neighborhood, police said.

Jamar Samuel, 26, was found facedown on the ground on the 1000 block of Connecticut Street in the Potrero Hill public housing complex at about 11:20 p.m. Saturday.

He was suffering from at least one gunshot wound, and was unconscious and not breathing. He was transported to a hospital but died before he arrived.

Just five days before, 33-year-old San Francisco resident Prince Johnson was found suffering a gunshot wound to his shoulder on that same block at about 12:50 p.m. June 29.

He was transported to a hospital, where he died.

No arrests have been made in either killing. Officer Grace Gatpandan, a police spokeswoman, said both shootings are still being investigated separately, but investigators are looking into all possibilities.

She urged anyone with information to contact the San Francisco Police Department.

Vivian Ho is a San Francisco Chronicle staff writer. E-mail: vho@sfchronicle.com Twitter: @VivianHo