HILLSBOROUGH – Two men now face indictments in the death of a professor at UNC.

An Orange County grand jury on Monday indicted 23-year-old Derick Davis II of Durham and 27-year-old Troy Arrington Jr. of Chapel Hill on charges of first-degree murder and robbery with a dangerous weapon.

The men were arrested after the attack last month. Police said 59-year-old Feng Liu died a day after suffering serious head wounds.

Davis and Arrington have been held at the Orange County jail, and it wasn’t immediately clear if they had attorneys. District Attorney Jim Woodall hasn’t said if the state will seek the death penalty.

Liu was a research professor in UNC’s Eshelman School of Pharmacy. A memorial for him was held Saturday on campus.