Two men in their 70s are in hospital after separate, seemingly random attacks by a hammer-wielding man in Sydney's north-west.
A 75-year-old man answered a knock at the door of his Eastwood home about 9pm on Tuesday and was struck in the face with a hammer. About 7am on Wednesday, a 71-year-old man was attacked at a nearby park, hit several times in the face and head, police say.
Both men were taken to Royal North Shore Hospital. The 71-year-old was in a serious but stable condition, while the 75-year-old was in a stable condition.
Police have released CCTV footage, taken from a childcare centre, showing a man in the barbecue area of neighbouring Somerville Park. They are searching for the man, described as Caucasian, aged in his 30s and about 170 centimetres tall. The two attacks, hours apart, are believed to be random.