A 17-year-old girl from Mexico faces a charge of child abandonment after a newborn baby boy was found in a black plastic garbage bag beside a Marysville retention pond, apparently after being tossed over a fence.

Authorities said she was staying with a sister who lives near the retention pond where the baby was found Saturday night by a neighbor.

The baby boy appeared to be just hours old with an umbilical cord still attached and blood on his body. He is recovering at an Everett hospital, officials said.

According to authorities, a woman heard the child’s cries through an open window on Saturday shortly before 11 p.m. She and several neighbors searched the area.

A man eventually found the child wrapped in a garbage bag behind a locked fence surrounding a retaining pond.

“The bag was around its head. The only thing sticking out when I got there was its hand. Its little arm just waving, like ‘come get me’ type thing, you know,” said Mike Wentland, the man who discovered the infant.

Police said the baby was taken to Providence Everett Medical Center. Hospital officials declined to release any information about the infant, citing privacy laws.