The attempted rocket fire comes as Hamas and the Palestinian Authority are engaged in reconciliation negotiations to see the PA resume civil control of the Gaza Strip.
"If peace prevails, Hamas will agree to allow its weapons to be under the control of the unity government", he said.
The Fatah movement, chaired by Azzam al-Ahmad, met with Palestinian President Mahmmoud Abbas, on Sunday, to discuss the details of agenda topics they plan to tackle with the Hamas movement in Cairo.
The Hamas delegation includes Saleh Arouri, deputy to the head of the Political Bureau, Yehya Sinwar, head of Hamas movement in Gaza, and his deputy Khalil al-Hayyeh, as well as members of the politburo Izzat Rishq, Husam Badran, Salah Bardawil and Mousa Abu Marzouk.
The Al-Qassam Brigades said in a press release that the Israeli shells caused property damage, but did not lead to any casualties.
Hamas declined to comment on the conditions set by Abbas. All of these issues will be discussed at a later stage. "The effect is that we basically trust them to take steps that restrain Hamas and undermine their legitimacy in the long run".
In 2006, Hamas swept the Palestinian legislative elections, clenching 44.5 percent of the vote and securing 74 seats in the Palestinian Legislative Council.
Yousef stated that a participation of a Hamas delegation from the occupied West Bank would positively contribute to "solving the outstanding issues" between Hamas and Fatah, stressing that Hamas is putting the internal issues in the West Bank on the agenda of the talks.
Moussa added, "We are going to Cairo to arrange mechanisms to implement the 2011 agreement, knowing that this agreement stipulated that security coordination with Israel was rejected altogether, and the resistance in Gaza is protected by all factions".
"Today, we stand before an important historic moment as we begin to get over our wounds, put our differences aside and place the higher national interest above all else", he said at the televised meeting.