His lawyer, Mehdi Essmidi, said his client had “complicated stuff going on” in his personal life, without elaborating. Essmidi said he did not believe the two young men had known each other for long.
Kayumi is from Newtown, about 4 miles (6.5 kilometers) north of Langhorne. He graduated in 2024 from Council Rock High School North, according to a school spokesperson.
His attorney did not speak to reporters following a court hearing Monday and declined to comment when reached by The Associated Press.
Online records show that Kayumi’s parents have owned and worked at multiple Popeyes fast food locations, including in Philadelphia, Brooklyn and Atlantic City.
His mother filed a missing person report with police Saturday, the day of the protest, saying her son had not been seen since that morning, according to the complaint.
Prosecutors, police and FBI officials say Balat and Kayumi joined a throng of counterprotesters at a small, anti-Muslim rally organized by far-right activist Jake Lang. A Christian nationalist, Lang is a critic of New York Mayor Zohran Mamdani, a Democrat and the first Muslim to hold the office.
Journalists photographed Balat hurling a device, smoking with a lit fuse, that was later found to contain the explosive TATP. The object, which also contained nuts and bolts, extinguished itself without harming anyone.
Balat then dropped a second object near some police officers and tried to run, but was tackled and arrested, according to a court complaint.
Balat and Kayumi were being held without bail after their court appearance on charges that include attempting to provide material support to a foreign terrorist organization and using a weapon of mass destruction. They were not required to enter a plea.
New York Police Commissioner Jessica Tisch said Monday there were no indications that the attack was connected to the ongoing war in Iran, but said the city remained on a heightened state of alert.
On Tuesday afternoon, a park near the mayor’s residence was evacuated and several surrounding streets were closed as police investigated reports of a “suspicious device.”
The object was later determined to be nonthreatening.
Mamdani was not home at the time and Gracie Mansion was not evacuated, a City Hall spokesperson said.
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Associated Press reporter Anthony Izaguirre contributed to this report.