Hostages, Killings & More: Terror Grips France As Authorities Place Schools On Lockdown

Paris (CNN) - Two intense standoffs with gunmen are underway in and around Paris early Friday afternoon, one involving the two brothers wanted in the Charlie Hebdo massacre and the other a hostage situation at a kosher grocery store.

Authorities have not said if or how the situations are related, but both underscored France's days-long nightmare and anti-terrorism fight. Dozens of schools were placed under lockdown because of the hostage situation in eastern Paris, police said.

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• Said Kouachi, one of the two brothers suspected of killing 12 people in and around the provocative satirical magazine Charlie Hebdo in Paris, spent several months in Yemen in 2011, receiving weapons training and working with al Qaeda in the Arabian Peninsula, which is based there, U.S. officials said Friday.

• French President Francois Hollande held a crisis meeting Friday afternoon with senior Cabinet members at the Elysee Palace in Paris. Those in attendance included Prime Minister Manuel Valls, Interior Minister Bernard Cazeneuve and Justice Minister Christiane Taubira, according to the French presidency.

• These aren't the only incidents occupying French authorities. So, too, is the fatal shooting of the policewoman Thursday in Montrouge, a southern suburb of Paris. On Friday, French police released photos of a man and a woman -- Coulibaly and Hayat Boumeddiene, 26 -- who they believe carried out this attack and are believed to be armed and dangerous.