Five people were taken to a hospital after a four-vehicle pileup just before 9 p.m. Monday on the Pali Highway heading Kailua-bound near Castle Junction.

There were 10 people involved, according to Emergency Medical Services. Five required medical attention by EMS paramedics and emergency medical technicians. One declined to be taken to the hospital, and four were uninjured.

Of those who required medical attention, two females were listed in serious condition. One of the females was 56 years old while no age was listed for the other. In addition, listed as stable were a female, 35; another female 61, and a third female, no age provided.

All the vehicles were towed from the scene.