Missing 9-year-old Charlotte Sena found safe in NY after search, suspect in custody

A missing 9-year-old girl was found alive Monday after a frantic two-day search that ensued amid reports that she was abducted from a campground in Upstate New York.

Police said they've detained a suspect. Charlotte Sena had been last seen on her bicycle Saturday at 6:15 p.m. in Moreau Lake State Park, about 35 miles north of Albany, New York where she was camping with her family.

"Charlotte Sena has been located and in good health," New York State Police authorities said. "A suspect is in custody. This is still an active investigation."

During their investigation, police "identified an individual as being in the area of the Moreau Lake State Park around the time Charlotte went missing," they wrote in an update on the case on their website.

"Further investigation led to the search of multiple residences where the individual is known to reside," they said. Authorities found Charlotte during the search of the homes at about 6:30 p.m. on Monday.

"This investigation is a culmination of multiple agencies working together for the common goal of bringing this child home to her loving family," police wrote. "We cannot emphasize enough how appreciative we are for the support we received from Charlotte’s community, friends and family.

What happened?

Sena was riding her bike around a loop in the bucolic park with her friends when she decided to ride around one more time by herself. Thirty minutes later, Charlotte's mother, Trisha Sena, found the bicycle but not her daughter. She called 911, leading to a massive search that includes state police, forest rangers, divers, dogs, drones and helicopters.

New York State Police: 'The extensive search for Charlotte Sena"

Authorities issued an Amber Alert for Charlotte on Sunday morning.

"The child was taken under circumstances that lead police to believe that they are in imminent danger of serious harm and/or death," the Amber Alert said.

The New York State Department of Environmental Conservation Forest Rangers led the search, which expanded over 46 linear miles, according to New York State Police.

"At this time, approximately 400 certified search and rescue personnel are actively searching," state police wrote in a Facebook post Monday afternoon. "The searchers originate from law enforcement agencies, 34 volunteer Fire Departments, along with private search and rescue groups."

The FBI also joined the search, CBS New York reported on Monday.

Moreau Lake State Park, where Charlotte was last seen before she was found, remains closed "until further notice," according to its website. The 4,600 acres state park in Saratoga County is “mostly wild” and includes dense forests, pine stands and rocky ridges, according to the New York State Department of Environmental Conservation. The wooded campsites are “quiet and secluded.”

Charlotte Sena's disappearance has been a 'nightmare' for the family

Jené Sena, an aunt of Charlotte, told USA TODAY the last few days have been a "nightmare" for her family.

Charlotte's mother and father stayed at the campsite since Saturday to help police in their search. They were surrounded by friends and over 30 family members, Jené Sena said.

Her husband, Patrick Sena, a firefighter with the Schenectady Fire Department, had searched for their niece since Saturday night, along with other family members. He was out in the state park all through Saturday night and well into Sunday evening after a 24-hour work shift.

"My husband couldn't walk this morning," Jené Sena said.

Charlotte is the middle child of three girls. Her father, David Sena, is a union pipe fitter, and her mother, Trisha, is a food service inspector for Stewart's Shops convenience stores. The family lives in Greenfield, a town of about 8,200 residents in Saratoga County, New York.

Jené Sena described Charlotte as a kind, funny girl who's known for her dry humor and contagious smile.

"She is such a sweet girl," Jené Sena said. "A real sweetheart."

National Center for Missing & Exploited Children: Law enforcement was 'putting the puzzle pieces together' before Charlotte was found

The early days of a case involving a missing child are crucial for law enforcement as they "put the puzzle pieces together" of what happened and build a timeline, said John Bischoff, the vice president of the Missing Children Division at the nonprofit organization National Center for Missing & Exploited Children.

Those "puzzle pieces" can vary depending on the type of missing child case. Bischoff said the case in Upstate New York was believed to be a "non-familial abduction."

Because the disappearance happened in a state park, authorities in the search for Charlotte looked at "who these people are, who was in the area in the park, who was in the park at the time of the disappearance and what's transpired beforehand and what’s transpired up until today," Bischoff said. His organization assisted New York State Police, he said.

"Charlotte’s case is a parent's worst nightmare – to see your child ride off on a bicycle and never see them again, or a few days at least," he said.

The case shines a light on nearly on the more than 7,000 missing children listed on the National Center for Missing & Exploited Children's website. Bischoff is asking Americans to "stop for a second" at the nonprofit's "partner locations like Walmart and really look for those images behind every one of those images child in danger," he said.

"We've seen time and time again that all it takes is one set of eyes to be a hero," said Bischoff.

Contributing: Vanessa Arredondo, USA TODAY

This article originally appeared on USA TODAY: Charlotte Sena, missing girl in New York found safe, police say