KABUL (AP) -- The Afghan police ordered 7,000 officers onto the streets of Kabul as the top U.S. general in the country warned that militants were planning attacks during Monday's Independence Day celebrations.

Maj. Gen. Jeffrey J. Schloesser said in a statement released by the military that there was ""credible intelligence"" showing militants planned to attack civilian, military and government targets.
Two hours before the alert went out, a suicide car bomber detonated a vehicle laden with explosives outside a U.S. base in the eastern province of Khost, according to Khost Gov. Arsallah Jamal. The blast killed nine Afghan laborers waiting to get inside the base and wounded 13 others, he said.
A second attacker tried to ram police officers investigating the first blast, but was shot dead by officers, Jamal said.
In Kabul, the increased police presence is a response to signs of the Taleban's growing strength near the capital.
Even the location of the celebration of Afghanistan's 89th anniversary of independence from Britain was kept secret and will be closed to the public to try to minimize the risk insurgents could again disrupt a national commemoration.
In April, gunmen in a rented hotel room fired on Afghan President Hamid Karzai at a military parade in Kabul as he sat in the review stands. Karzai escaped injury, but the attack killed three people, including a lawmaker.
Taleban violence has spiked across Afghanistan in recent days, including an ambush on a NATO convoy on Sunday, attacks on police checkpoints and a roadside bomb targeting a police convoy. More than 90 people were killed over four days — most of them reportedly Taleban insurgents.
Kabul so far has been spared the violence afflicting much of Afghanistan, but there are signs the Taleban and other militant groups have gained a foothold in neighboring provinces. And the capital suffered spectacular bomb attacks this year against an international hotel and the Indian Embassy.
Interior Ministry spokesman Zemarai Bashary said more than 5,000 extra police were drafted for what he described as the biggest operation of its kind in Kabul since 2001, when U.S.-led forces ousted the Taleban government.
The Interior Ministry said the capital's police would search buildings and cars to ""prevent any disruptive actions by the enemy.""
A lawmaker from Kandahar who is critical of Karzai's government said the police deployment has more to do with protecting the government's reputation than reassuring the public.
""Unless they bring some comprehensive changes in the security, this deployment will not affect people's confidence,"" Khalid Pashtun said.
Pashtun said there has been a steady increase in kidnappings, robberies and other crimes this year.
""People are afraid to leave their house after 7 p.m.,"" he said.
One policeman deployed near a wide avenue where gunmen shot at Karzai in April was 22-year-old police recruit Farid Ahmad.
""I am still a student, but this was an order from the commander of the academy that we should come out and search the vehicles,"" he said.
In an ambush last week, insurgents wielding assault rifles gunned down three female aid workers about an hour's drive south of Kabul.
To the west, insurgents have been regularly attacking U.S.-led coalition and NATO supply convoys, burning fuel trucks and killing NATO and coalition soldiers.
To the east, the Tag Ab valley of Kapisa province has become the scene of near-daily clashes and air strikes by the U.S.-led military coalition in Afghanistan.
Afghan and NATO officials insist that the nearly seven-year effort to bring stability to Afghanistan is progressing.
However, the security operation in Kabul is the second time this year that authorities have taken extraordinary measures to reassure Afghans that cities are safe from a Taleban assault.
In June, Afghan and NATO commanders mustered thousands of troops to clear militants from a strategic valley within striking distance of Kandahar, Afghanistan's main southern city.
Overall, insurgent attacks jumped by 50 percent in the first half of 2008 from the previous year, according to recent data from the Afghanistan NGO Safety Office, a Kabul-based group that advises relief groups on security.
More than 3,200 people — mostly militants — have been killed in insurgency-related violence this year, according to an Associated Press count based on figures from Western and Afghan officials.
Most of the violence is concentrated in the south and east, where Taleban sympathies run strongest and militant bases in neighboring Pakistan are closer.