Matthew VanDyke and six Ukrainians were accused of smuggling weapons and drones to armed ethnic groups fighting India.

Matthew VanDyke, a United States citizen held in India for more than six months and accused of supporting ethnic separatist groups, has been temporarily released on bail and returned to the US.

The 47-year-old arrived on Saturday morning and reunited with his family, according to a family spokesperson.

VanDyke, who runs a Washington, DC-based consultancy that says it provides “free security consulting, training, supplies and other services to vulnerable populations”, was detained in March by Indian authorities, along with six Ukrainian nationals who were also released on Saturday.

India’s main opposition Congress party said that, despite being “accused of plotting terrorist acts”, VanDyke was allowed to return home from New Delhi.

“Obviously US pressure determined this outcome, but what did India get in return?” Jairam Ramesh, a legislator and spokesperson for the party, posted on X.

VanDyke’s family told Al Jazeera before his release that his health was failing and he had lost weight after going on a month-long hunger strike in Tihar Jail to try to improve conditions in prison. He had to use a wheelchair to attend hearings, according to his mother, Sharon. VanDyke denied the accusations against him, and his family said he was in the region documenting the situation faced by minority ethnic groups.

Earlier this month, Indian prosecutors declined to bring terrorism charges against VanDyke and the others. Instead, prosecutors formally accused them of visa violations for entering restricted areas along the Myanmar border.

The Maryland native is a former filmmaker and rebel fighter during the Arab Spring and spent about six months in a Libyan prison during the Muammar Gaddafi regime. He was held alongside James Foley, a journalist who was later killed by ISIL in Syria. In recent years, VanDyke was based in Ukraine, where his consultancy helped train Ukrainian military forces.

In a statement to Al Jazeera before VanDyke’s release, James Foley’s mother, Diane, who now heads a foundation named after him, said she was “deeply saddened by his arrest in India and by his apparent poor health.” She added that her foundation called for “his release on humanitarian grounds.”