GAZA CITY (Ma'an) -- Palestinian resistance factions resumed projectile fire toward Israeli targets Friday, less than a day after Hamas officials declared a ceasefire, seeking to avoid further casualties.

The leading Gaza party said it had secured pledges from most resistance factions in the coastal enclave, to stop fire if Israel would agree to the ceasefire.

An hour after the initiative was announced, a wave of Israeli air strikes hit targets across the Strip, killing four Al-Qassam fighters.

Israeli media accused Hamas of offering the ceasefire after a barrage of projectiles were fired, seeking only an escape from retaliation.

While one faction announced its refusal to participate in the ceasefire, and the DFLP said fighters launched projectiles toward Israel at approximately 3 p.m., others held off fire until 4:30, when the Al-Qassam Brigades launched the first set of projectiles.

4:30 p.m. The Al-Qassam Brigades say fighters fired six projectiles on Israeli military posts east of Rafah, and three mortar shells toward the former Sufa crossing, also near Rafah.

5:40 p.m. The armed wing of the PFLP, the Abu Ali Mustafa Brigades, said fighters launched two Grad-style projectiles toward Ashkol.

6:20 p.m. An armed group affiliated with Fatah movement said fighters fired two projectiles on a Kibbutz east of Al-Qarara, in the southern Gaza Strip.

7:15 p.m. The Abu Ali Mustafa Brigades said fighters launched a Grad-style projectile toward Ashkol another one toward Ofakim, Israeli population centers near Gaza.

7:18 p.m. The Al-Quds Brigades, the armed wing of Islamic Jihad, said fighter launched six mortars toward the Israeli military post of Nahal Oz, east of Gaza City.

7:30 p.m. The An-Nasser Salah Ad-Din Brigades said fighters launched projectiles toward the Zekem military post.