An elderly man was killed bylightning in Thane district which experienced unseasonal rains on Wednesday, an officail said here.Unseasonal rains lashed several parts of Thane and its adjoining Palghar district in the evening.Murbad tehsildar Amol Kadam said a 60-year-old man, who was working in his firm, died after being struck by lightning.The deceased was identifed as Madhukar Daji Chavan, a resident of Nagvadi in Thane district, he said.