A hand grenade went off at a barbershop in a Palestinian refugee camp near southern Lebanese port city of Tyre town on Saturday, wounding the shop owner's son, Lebanon's state-run news agency NNA reported.
The wounded identified as Firas Khodr Suleiman sustained several injuries in the blast, the report added.
The blast came only one day after a dynamite explosion targeting a fishing boat in northern Lebanon's Nahr al-Bared refugee camp Friday night.
No casualty was caused by Friday's explosion, according to the report.
Lebanon has a total of 12 Palestinian refugee camps, home to some 400,000 Palestinian refugees. There are frequently gun fights between armed groups in the camps.
Source: Xinhua