Autumn went for a bike ride around 12:30 p.m. on Saturday and hasn't been seen since.
Police say she was wearing blue sweatpants over blue shorts, a yellow t-shirt with "Clayton Soccer" on front and bright high top sneakers. She was last seen riding a 20" BMX Odyssey bicycle on West High Street.
Her family reported her missing at 9:30 p.m. Saturday.
Pasquale, who is one week away from turning 13, has blonde hair with pink highlights, stands about 5'2" tall and weighs 120 pounds.
Anyone with information is asked to contact Clayton Police at (856) 881-2301 or the NJSP Missing Persons Unit at 800-709-7090.
Volunteers were out on the streets Monday, handing flyers to passing drivers to help spread the word.
"The community is coming together, it's a very sad thing. I can only imagine what the parents are dealing with. Right now, we will find her," said Mayor Tom Bianco.
"If you're a farmer out there farming, please take a look. If you're a bus driver, if you're a guy on the road, if you're a toll-taker, anybody. We're putting it out to the Delaware Valley, we've got to bring Autumn home," said her uncle, Paul Spadafora.
The FBI, NJ State Police and the Gloucester County Prosecutor's office are among the agencies now involved.
"We haven't ruled out any theory as to whether this is a runaway or abduction. We're continuing to track down leads," said Gloucester County Prosecutor Sean Dalton.
K-9s and crews on horseback searched a wooded area in Wiliamstown where, police say, the girl's cell phone signal was picked up.
On Monday morning, authorities asked those who want to help to stick to handing out flyers and not go into the woods so as not to destroy evidence or add new scents.
Both police and family members believe Pasquale's cell phone is now turned off.
"I just got off the phone and her mailbox is now full," Spadafora, told Action News on Sunday night.
Relatives say they have reason to believe the girl could've ventured to the area of Scotland Run Park. They spent Sunday searching those grounds.
Police in Gloucester County have used a helicopter and bloodhounds in their search, which included a bike trail that connects Clayton with Williamstown.
Matt Quiqley doesn't know the girl directly, but he's one of dozens of community members who joined in the search.
"My girlfriend was walking the path," Matt Quiqley of Clayton,NJ told us. "I was walking down by the creek." Community crews searched several trails Sunday afternoon.
"She's nice she doesn't break rules, she listens," according to R.J. Doughty, a friend of Autumn's.
"The more these cases go on, you know what the outcome is," Spadafora told Action News on the scene of the search. "We want her home safe. That's the bottom line."