Palestinian militants launched rockets at Israel Thursday, Josh Levs of CNN said.
Israel reported three people dead, while the Palestinians have put their number of dead at 13, though they will not say how many of them were militants, Levs said.
More than 245 rockets have been fired at Israel since "Operation Pillar of Defense" began Wednesday, Levs said.
Tel Aviv residents say they heard an explosion following an air-raid alert across the city, raising fears of a Gaza rocket strike on Israel's commercial capital, according to a FoxNews.com article.
Officials said two rockets had been fired at Tel Aviv early Thursday, but no reports had been made about where or when they hit, according to a Time.com article.
According to the article, earlier in the day, a third rocket landed in an open area of Rishon Lezion, a city on Tel Aviv's southern outskirts, but there were no casualties.