The FBI obtained text messages and other communications between Robinson, 22, and his partner. Agents said those exchanges helped them track down Robinson. Evidence collected from the apartment, including computers, has been sent to Quantico for review.
The FBI has not said whether charges could be filed against Robinson’s partner. A spokesperson said the Bureau is pursuing all leads and vowed that “every connection, every group, every link will be investigated.”
The apartment in Saint George is in the same community where Robinson’s parents live. Robinson’s partner has now been identified as 22-year-old Lance Twiggs.
A relative of Twiggs confirmed that the two were living together in a statement to The Post on Saturday, saying, “Yes, they were roommates.”

The relative described Twiggs as the “black sheep” of his St. George family, but declined to discuss whether he and Robinson were romantically involved. She said she did not know Twiggs’ political views or whether he was transitioning, though she added that such news would not surprise her.
