A 28-year-old man was taken to a hospital in serious condition Friday morning after he was reportedly stabbed and struck by a rock at the Diamond Head Lookout, according to the city Department of Emergency Services.

The assault occurred at about 6 a.m.

Police said they did not receive a report of the stabbing.

A similar incident occurred in October at Diamond Head Beach. At about 6:30 a.m. Oct. 31, police had said a male suspect tried to take a 48-year-old woman’s property. After a struggle the man stabbed the woman with a dangerous instrument. Police said the man fled after the woman screamed.

She was transported in serious condition to a hospital. Police said she suffered up to five possible stab wounds to her body.