Israel's army spokeswoman says an Israeli Arab who is a member of Hamas has been arrested for Wednesday's bus bombing in Tel Aviv.

The bombing injured 27 people near Israel's military headquarters and threatened to scuttle efforts to broker a cease-fire to end fighting between Israel and Gaza.

Israeli military spokeswoman Lt. Col. Avital Leibovich reported Thursday on Twitter that authorities had arrested the man who planted the bomb on the bus and identified him as an Arab Israeli from the village of Taybeh. She said he was a member of Hamas.