Siddiqui pleaded not guilty to leaving the scene of a personal injury accident.
The arrest came after days of investigation, including tips from the public. Authorities said the case is still being investigated as a hit-and-run.
Siddiqui was driving a 2013 BMW on Route 343, according to reports. He struck Lineva at approximately 2 a.m.
He faces up to seven years in state prison if convicted.
Middle Village native Stefani Lineva was killed early Saturday morning in an upstate city, the victim of an apparent hit and run.
The 20-year-old Binghampton University student was found at 2 a.m. about three miles from campus in the eastbound lane of Route 434, a busy four-lane divided roadway that runs past the entrance to the university.
“The loss of someone so young and talented is almost impossible to imagine and impacts our entire community,” said university president Harvey Stinger. “We will miss Stefani's spirit, passion and engagement with everyone she touched on our campus.”
According to the Binghamton Police Department (BPD), Lineva suffered significant injuries consistent with being hit by a vehicle. She was later pronounced dead at an area hospital.
BPD is currently working with the university’s campus police and the Broome County Sheriff on the investigation. On Monday, Binghamton city officials and the university announced an $11,000 reward for anyone with information leading to the driver of the vehicle.
Lineva was a standout tennis player who honed her craft at West Side Tennis Club in Forest Hills Gardens. Club members are planning to hold a vigil in her memory on Friday evening.
She graduated from Forest Hills High School, where she was runner-up in the PSAL singles championship as a senior.
Lineva transferred from Adelphi University to Binghamton University in the fall.
During her two seasons playing for the Adelphi Panthers, Lineva was named the Northeast-10 Rookie of the Year and helped lead the university to its first conference championship in 2015. She was an all-conference selection in both singles and doubles.
“She loved being at practice with her friends and was always the first to volunteer when she performed community service,” said Binghampton tennis coach Libby McGovern. “She had very high aspirations of making a difference in the world and doing great things for other people.”