Police have arrested a 36-year-old man over the attack on a hawker control officer at the weekend.
Speaking to the media after attending a function today, Commissioner of Police Andy Tsang said the arrestee is not Chinese.
The hawker control officer is in critical condition after he was pushed to the ground in Des Voeux Road on March 15.
Meanwhile, the Police investigation into the Occupy Central movement has been completed and 48 people, suspected of either organising or participating in the unlawful assembly, have been arrested.
The Department of Justice is now studying their cases.