"Currently, there is no timetable for his return", the team said in its statement.
Silas received a text message at about 2 p.m. Monday saying Clifford was too sick to coach the team that evening, the Charlotte Observer reports.
Ola suspends driver accused of molesting woman in Bengaluru
While the woman approached the police, she is yet to file any complaint against the driver with the police department. The driver took her to a deserted spot on the Ring Road in south east Bengaluru and suddenly stopped, the woman said.
"(Clifford) is always so prepared for every instance, every game, so today was a lot of study", Silas told reporters before the game. Out of respect for his privacy, the organization did not comment further on his condition. The team said at the time that he was absent due to an illness. The team is 9-13 this season, 11th place in the Eastern Conference.
Silas took over as Clifford's lead assistant upon Patrick Ewing being hired as head coach at Georgetown last season.
Silas has been a longtime assistant in the National Basketball Association, coaching for the Hornets/New Orleans Pelicans (2000-03), Cleveland Cavaliers (2003-05), Golden State Warriors (2006-10) and the Charlotte Bobcats/Hornets (2010-present).