(LEAD) Prosecutors summon Lotte founder's son over alleged embezzlement

(ATTN: UPDATES with more details in paras 3, 4, 6)

SEOUL, Sept. 1 (Yonhap) -- The elder son of Lotte Group founder Shin Kyuk-ho was summoned by prosecutors Thursday as they resumed an investigation into the embattled retail giant after one of its senio