Four people remain missing after Tuesday’s bridge collapse. Among those is 40-year-old Miguel Luna, a father of three who came to the U.S. from El Salvador 19 years ago in hopes of a better life.

“He’s supposed to come in the morning back home, and [he] never come,” Gustavo Torres, the executive director of CASA, a nonprofit human rights organization that advocates for immigrant communities, told CBS News.

Another missing person who was working on the bridge was Maynor Yassir Suazo Sandoval, a father to a teenage son and a 5-year-old daughter. The Honduran citizen was days away from turning 35 years old.

Sandoval’s eldest brother told CBS News that their family is in “tremendous agony.”

One day after the tragic bridge collapse, Maryland authorities identified two of the six victims who were unaccounted for following the accident as 35-year-old Alejandro Hernandez Fuentes, originally from Mexico, and 26-year-old Dorlian Ronial Castillo Cabrera, from Guatemala. Divers discovered their bodies in a pickup truck submerged in the Patapsco River.