Reuters quotes Abdel Majid of the Libyan transitional government as saying that a wounded Moammar Gaddafi has been captured.
Update at 8:14 a.m. ET: The Misrata Military Council, one of multiple command groups for revolutionary forces, says its fighters captured Gadhafi in Sirte, the Associated Press reports. Another commander, Abdel-Basit Haroun, tells the AP that Gadhafi was killed when an airstrike hit a convoy trying to flee.
The spokesman for Libya's transitional government, Jalal al-Gallal, and its military spokesman Abdul-Rahman Busin, however, say the reports have not been confirmed. A NATO official also says the alliance could not independently confirmed, the AP reports.
Update at 8:03 a.m. ET: The BBC's Caroline Hawley in Tripoli reports hearing "quite a lot of celebratory gunfire."
Update at 7:59 a.m. ET: Al Arabiya reports that the head of Libya's National Transitional Council will be speaking shortly about some "good news" regarding Gadhafi.
Update at 7:55 a.m. ET: There are numerous unconfirmed reports that Gadhafi may have died of wounds inflicted when his convoy was attacked. Reuters quotes a "senior NTC military official" as saying Gadhafi had died of wounds suffered in his capture near Sirte.
Al Jazeera reports that its sources also say that Gadhafi has been killed, but again no official confirmation.
Update at 7:45 a.m. ET: A fighter from the transitional government tells Al Jazeera that Gadhafi has been captured, but cannot confirm whether he is dead or alive.
Update at 7:40 a.m. ET: Al Jazeera quotes unidentified sources as saying that Gadhafi has been captured and is "critically injured."
Update at 7:38 a.m. ET: Reuters, quoting an NTC official, says a wounded Gadhafi was taken away in a hospital.
Update at 7:31 a.m. ET: Reuters quotes an official with the National Transitional Council as saying a woundedGadhafi was captured near Sirte as tried to flee in convoy which attacked by NATO.
Update at 7:28 a.m. ET: Former Libyan minister of information Ali Errishi tells Al Jazeera that top officials in the National Transitional Council have confirmed Gadhafi's capture.
The Reuters reports says that Gadhafi was wounded in both legs.
Al Jazeera quotes an NTC official as saying only that a "high-profile target" has been captured.
The report come as the transitional government says it has seized Gadhafi's hometown of Sirte.
Original post: Libyan TV channels are reporting the arrest of Moammar Qaddafi in his hometown of Sirte, Al Alibya reports. There has been no official confirmation.
Al Arabiya, quoting medics, also reports that ousted defense minister Abu Bakr Yunis has been found dead in the city, which was one of the last strongholds of Gadhafi loyalists.