Police say six men have been arrested in another gang rape of a bus passenger in India, four weeks after a deadly attack on a student on a moving bus in the capital outraged Indians and led to calls for tougher rape laws.

Police say a 29-year-old woman was traveling on a bus to her village in northern Punjab state on Friday and was the only passenger. The driver and conductor allegedly drove her to a desolate location and took her to a nearby building where they were joined by five friends and raped her repeatedly.

Police say they arrested six suspects on Saturday and are searching for another.

The brutal rape of a student on a New Delhi bus in December set off an impassioned debate about what India needs to do to prevent such tragedies.