Iran's semi-official Fars News Agency also reported that Khatami formally declared his candidacy on Sunday.
CNN: Top Iranian reformer to challenge Ahmadinejad, reports say
Fars said the drone was captured "in the last few days" without giving further details.
Police cut off the electricity to the housing complex, the semi-official FARS news agency said.
Fars News Agency said it was the largest earthquake to hit the region in at least 40 years.
Gen Hassan Shateri was killed on Wednesday while travelling from Syria to Lebanon, the semi-official news agency Fars.
The trial, which began over the weekend, is scheduled to resume Saturday, according to Iran's semi-official Fars News Agency.
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Fars News Agency reported that it was the largest earthquake to hit the region in at least 40 years.
Iraj Hassanzadeh, the deputy governor of Iran's Kurdistan province, told Fars the three were arrested in the western Iranian city of Marivan.
The semi-official Fars news agency quoted Deputy Foreign Minister Hossein Amir Abdollahian as saying the raid will have significant implications for Israel.
Iran's semiofficial Fars news agency said the eight presidential candidates would collectively have 539 hours of free TV and radio time to outline their plans.
Iranians enjoy a global reputation in carpet weaving, and the carpet weavers of Fars, located in the south-west of Iran, are among the most prominent.
Iran's Fars news agency said the quake measured at 6.1 magnitude.
CNN: State TV: 4 dead after quake hits Iran, near nuclear site
Fars cited an "informed source" but did not name the person.
"We are expecting low casualty numbers and minimal damages because the area is thinly populated, " Fars quoted Mohamad Sarvar, the deputy national relief coordinator, as saying.
"All those under debris have been rescued, and the quake-stricken people are now being provided with their basic needs, " Deputy Interior Minister Hassan Qaddami told Fars.
CNN: More than 300 killed, 3,000 injured in Iran earthquakes
Jalal Sharafi, deputy secretary of the Iranian Embassy in Baghdad, arrived in Tehran a few hours after his release, according to Iran's semi-official FARS news agency.
Fars reported that the Canadian-Iranian reporter, who had worked for the BBC and England's Channel 4 network, admitted having filed false reports for Newsweek during the elections.
Fariborz Rashedi, the head of emergency medicine in Sistan Baluchestan, told Fars News Agency that so far he had received reports of only three casualties in the area.
"We are expecting low casualty numbers and minimal damages because the area is thinly populated, " Fars News Agency quoted Mohamad Sarvar, the deputy national relief coordinator, as saying.
"All those killed or injured in the incident have been taken out of the rubble, " said Abolhassan Faqih, the head of Iran's Red Crescent Society, according to Fars.
CNN: More than 300 killed, 3,000 injured in Iran earthquakes
Fars news agency said on its website that its news item "was extracted" from the Onion website on Friday, but was taken down in less than two hours.
BBC: Iran's Fars agency sorry for running the Onion spoof story
"Sending (the monkey into space) and retrieving it was the first step for sending humans into space, " Defense Minister Ahmad Vahidi said, according to the semi-official Fars News Agency.
Fars news agency reported that former deputy foreign minister Mohsen Aminzadeh, former government spokesman Abdollah Ramazanzadeh, former senior lawmaker Mohsen Mirdamadi and former Industry Minister Behzad Nabavi were among the defendants.
Hossein Ali Amiri, head of the judiciary for Fars province, claims that the defendants, who all live in that part of Iran, had over the years collected information about local military bases.
Most recently, the semi-official Fars news agency reported that a journalist for Newsweek magazine who was arrested in Tehran confessed to doing the bidding of Western governments, though CNN could not verify the report.
Sayyed Hassan Firouzabadi, chief of Iran's Joint Armed Forces, said Iranian soldiers were willing to die as they did in the brutal eight-year Iran-Iraq war in the 1980s, according to the state-run Fars News Agency.
CNN: Troops willing to die to stop Iran unrest, general says
According to FARS, Tehran had proposed at a previous meeting in Baghdad that it would stop production, close the Fordow facility where the work is carried out, and ship its purified fuel out of the country.
Ahmad-Reza Radan told Iran's Fars news agency.
CNN: Chaos prevails as protesters, police clash in Iranian capital
The students also want British authorities to return a suspect allegedly wanted in the killing of Neda Agha-Soltan, a 26-year-old woman who became an icon after she was killed during the post election riots in Iran this summer, Fars reported.
Fars has since removed the post.
FORBES: Iran's Fars News Agency Picks Up Bogus Obama Story from The Onion
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