Pakistani Prime Minister Imran Khan has extended an offer to Indian Prime Minister Nerendra Modi for talks to de-escalate rising tensions between the two nuclear-armed neighbors.
Khan says that war benefits neither nation and that he hopes "better sense can prevail."
In a televised address to the nation, Khan says Pakistan is "ready to cooperate" and added: "Let's sit together to talk to find a solution."
Khan again promised to cooperate with India to find the perpetrators behind a February suicide attack in Indian-controlled Kashmir that killed more than 40 Indian troops.
The Pakistan-based Jaish-e-Mohammad group claimed responsibility; the suicide bomber was from Indian-ruled Kashmir. India has long accused Pakistan of harboring anti-Indian militants, a claim Pakistan denies.
Indian police say officials have recovered four bodies from the wreckage of an Indian Air Force chopper that crashed in Indian-controlled sector of Kashmir.
Senior police officer Munir Ahmed Khan said the chopper crashed close to an airport on Wednesday in Budgam area, in the outskirts of the region's main city of Srinagar. The Srinagar airport, which has been shut along with two other airports for civilian flights in the region, is also an air force station.
Police said they were still going through the wreckage and did not immediately identify the victims. Local residents earlier said they saw three bodies at the site.
Eyewitnesses said soldiers fired warning shots in air to keep residents away from the crash site.
Meanwhile, as the tensions and confrontation escalated between India and Pakistan, authorities asked workers to paint rooftops of hospitals and clinics in red and white with medical emblem of cross in Srinagar city.
India says one of its air force Mig-21 fighter aircraft has been "lost" in an engagement with intruding Pakistani aircraft in the Indian portion of Kashmir and that its pilot is missing.
Pakistan earlier on Wednesday said it shot down two Indian planes and captured two pilots.
India's External Affairs Ministry spokesman Raveesh Kumar says that one Pakistan air force aircraft also was shot down and India's ground forces saw it falling from the sky on the Pakistan side on Wednesday.
Kumar's statement came hours after Pakistan claimed that its air force shot down two Indian warplanes after they crossed the boundary between the two nuclear-armed rivals in the disputed territory of Kashmir and captured two Indian pilots, one of whom was injured.
Kumar said India was still "ascertaining" whether its pilot was in Pakistan's custody.
China is renewing calls for Pakistan and India to take steps to avoid a further deterioration of ties following the latest flare-up over Kashmir.
Foreign Ministry spokesman Lu Kang told reporters at a daily briefing on Wednesday that "both Pakistan and India are important countries in the subcontinent of South Asia."
He added that China hopes "they will keep in mind the regional peace and stability, exercise restraint, take effective measures to strengthen dialogue, and maintain two sides' fundamental interests and the regional peace and stability."
Lu also said: "We hope they will avoid deterioration of the situation."
China is longstanding close ally and arms supplier to Pakistan, but has also sought better ties with its southern neighbor and Asian rival India.
India's former ambassador to the United States says that a new red line with Pakistan has been drawn.
The remarks came hours after Pakistan said its air force shot down two Indian warplanes after they crossed the boundary in the disputed region of Kashmir and captured two Indian pilots.
Retired diplomat Lalit Mansingh said on Wednesday that India's policy of strategic restraint "is no longer."
Mansingh says a new doctrine was established by India's pre-dawn airstrikes on Tuesday in Pakistani territory that Indian officials said targeted terrorist infrastructure.
The strikes were the deepest inside Pakistani territory since the neighboring countries last went to war over Kashmir in 1971.
India's Prime Minister Narendra Modi said afterward that the attacks paid homage to "India's brave hearts" — an apparent reference to 40 Indian soldiers killed in a Feb. 14 suicide bombing in India-controlled Kashmir.
Pakistan's Civil Aviation Authority says it has shut its airspace to all commercial flights as tensions with neighboring India escalate further over the disputed region of Kashmir.
The agency says in a statement that the airspace was closed on Wednesday, without elaborating or indicating when flights might resume.
This came shortly after Pakistan said its air force shot down two Indian warplanes after they crossed the boundary between the two nuclear-armed rivals in the disputed territory of Kashmir, and captured two Indian pilots.
The latest wave of tensions erupted after a pre-dawn strike by Indian aircraft Tuesday on Pakistani territory.
Pakistan's military says it has two Indian pilots now in custody, captured after the Pakistani air force shot down their aircraft on its side of the disputed region of Kashmir.
The military's spokesman, Maj. Gen. Asif Ghafoor, says one of the pilots is injured and is being treated in a military hospital. He did not elaborate on the pilot's injuries. Ghafoor says the other pilot is in custody.
The military says the Indian Air Force plane was downed on the Pakistani side of the Line of Control in Kashmir — a boundary separating the disputed Himalayan region between the nuclear armed neighbors.
Ghafoor says the Indian pilots "are being treated well." He made no mention of whether they would be returned to India.
Tensions remain high on the Asian Subcontinent where tens of thousands of Indian and Pakistani soldiers face off along the Kashmir boundary.